Pre-pulsar shuttle

A pre-pulsar shuttle is a shuttle that hassles a predecessor of the pulsar. Small pre-pulsar shuttles are currently known for periods 22, 25, 26, 28, 29, 30, 32, 36, 40, 42, 47, 58, 60, 64, 65, 88, and 90. Shuttles for these periods are shown below, along with the number of generations and displacement for each reaction.

x = 24, y = 19, rule = B3/S23 b2o18b2o$o2bo2b2o8b2o2bo2bo$b2o2bobo8bobo2b2o$3b2o14b2o$3bo16bo$2obo8b 3o5bob2o$o2bob2o5bobob3obo2bo$2b2ob2o5b3ob3ob2o4$2b2ob2o5b3ob3ob2o$o2b ob2o5bobob3obo2bo$2obo8b3o5bob2o$3bo16bo$3b2o14b2o$b2o2bobo8bobo2b2o$o 2bo2b2o8b2o2bo2bo$b2o18b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 50 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 12 HEIGHT 600 WIDTH 600 ]] p22, left: (11,3), right: (11,3) (Catagolue: here) Found by Mike Playle and Matthias Merzenich in May 2013 (click above to open LifeViewer) RLE: here Plaintext: here	x = 21, y = 22, rule = B3/S23 18bo$b2o13b3o$o2bo2b2o7bo$b2o2bobo7b2o$3b2o$3bo$2obo8b3o$o2bob2o5bobo 3b2o$2b2ob2o5b3o3b2o4$2b2ob2o5b3o$o2bob2o5bobo$2obo8b3o$3bo13b2o$3b2o 12bobo$b2o2bobo11bo$o2bo2b2o2b2o7b2o$b2o8bo$5bob4o$5b2obo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 50 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 12 HEIGHT 600 WIDTH 600 ]] p25, left: (11,3), right: (14,3) (p25 pre-pulsar shuttle) (click above to open LifeViewer) RLE: here Plaintext: here	x = 39, y = 39, rule = B3/S23 12b2o11b2o$12b2o3bo3bo3b2o$17bo3bo$17bo3bo$11bo15bo$10bobo13bobo$11bo 3b3o3b3o3bo$15bobo3bobo$15b3o3b3o2$5bo27bo$4bobo25bobo$2o3bo27bo3b2o$ 2o35b2o$16b2o3b2o$6b3o8bo3bo8b3o$6bobo5bo9bo5bobo$b3o2b3o5b2o7b2o5b3o 2b3o4$b3o2b3o5b2o7b2o5b3o2b3o$6bobo5bo9bo5bobo$6b3o8bo3bo8b3o$16b2o3b 2o$2o35b2o$2o3bo27bo3b2o$4bobo25bobo$5bo27bo2$15b3o3b3o$15bobo3bobo$ 11bo3b3o3b3o3bo$10bobo13bobo$11bo15bo$17bo3bo$17bo3bo$12b2o3bo3bo3b2o$ 12b2o11b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 50 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 12 HEIGHT 600 WIDTH 600 ]] p26, edge: (14,3), centre: (12,3) (p26 pre-pulsar shuttle) (click above to open LifeViewer) RLE: here Plaintext: here
x = 17, y = 22, rule = B3/S23 4b2o$3bo2bo$2bobobo4bo$2bo2bo4bobo$bo9bo3b2o$2bobo10b2o2$8b3o$8bobo$8b 3o2b3o4$2o6b3o2b3o$2o6bobo$8b3o2$15b2o$3b2o6bo3b2o$4bo5bobo$b3o7bo$bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 50 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 12 HEIGHT 600 WIDTH 600 ]] p28, left: (14,3), right: (14,3) (p28 pre-pulsar shuttle) (click above to open LifeViewer) RLE: here Plaintext: here	x = 18, y = 27, rule = B3/S23 11b2o$11bo$13bo$9b5o$9bo$12b4o$12bo2bo2$bo$obo6b3o4bo$bo7bobo3bobo$9b 3o3bobo$16bo2$16bo$9b3o3bobo$bo7bobo3bobo$obo6b3o4bo$bo2$12bo2bo$12b4o $9bo$9b5o$13bo$11bo$11b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 50 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 12 HEIGHT 600 WIDTH 600 ]] p29, left: (15,3), right: (14,3) (p29 pre-pulsar shuttle) (click above to open LifeViewer) RLE: here Plaintext: here	x = 18, y = 11, rule = B3/S23 bo14bo$obo6b3o3bobo$bo7bobo4bo$9b3o4$9b3o$bo7bobo4bo$obo6b3o3bobo$bo 14bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 50 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 12 HEIGHT 600 WIDTH 600 ]] p30, left: (15,3), right: (15,3) (Eureka) (click above to open LifeViewer) RLE: here Plaintext: here
x = 26, y = 33, rule = B3/S23 5bo14bo$4b2o14b2o$3bob2o12b2obo$2b3o2bo10bo2b3o$4bobobo8bobobo$5bobobo 6bobobo$6bo2b3o2b3o2bo$7b2obo4bob2o$3b2o3b2o6b2o3b2o$2b3o3bo8bo3b3o$bo b2o16b2obo$obo20bobo$o2bo10b3o5bo2bo$b2o11bobo6b2o$14b3o4$14b3o$b2o11b obo6b2o$o2bo10b3o5bo2bo$obo20bobo$bob2o16b2obo$2b3o3bo8bo3b3o$3b2o3b2o 6b2o3b2o$7b2obo4bob2o$6bo2b3o2b3o2bo$5bobobo6bobobo$4bobobo8bobobo$2b 3o2bo10bo2b3o$3bob2o12b2obo$4b2o14b2o$5bo14bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 50 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 12 HEIGHT 600 WIDTH 600 ]] p32, left: (16,5), right: (16,5) (Catagolue: here) Found by Noam Elkies on January 26, 1995 (click above to open LifeViewer) RLE: here Plaintext: here	x = 36, y = 75, rule = B3/S23 11b2o$12bo$10bo$10b2o4b2ob2o$13b2o2bobo$9bob2ob2o3bo$9b2obob3o2bob2o$ 17bobo2bo$15b2obob2o$10b2o3b2o3bo$11bo3b3o2bo2b2o$10bo7bob2o2bo$10b2o 5b2o3b2o$13bobo4b2o$8b7ob4obo$8bo9bobo$9b3obo4bobobobo$11bobo2bobo2bob 2o$14b3ob2obo$13bo5bobo$13b3obobob2o$2o11bo6bo2bo$obo12b4o3b2o$2b3o9bo b6o$bo3bo9bo6b2o$b3o2bo2bo4b2o5bo2bo$6bob2o10bobobo2b2obo$b3o2bo2bo4b 2o5bo2bobo2b2o2bo$bo3bo8bob4o4bob2o3b3o$2b3o10b4o6bo2b3o$obo13bob2obo 3bobo4b2o$2o23bobo2b2obo$21bo5b3o4b2o$13b3o5b2o2b2o2b2o4bo$b2o10bobo 11bo2bob3o$bo2bo8b3o13bo2bo$2b3o25b2o2$2b3o25b2o$bo2bo8b3o13bo2bo$b2o 10bobo11bo2bob3o$13b3o5b2o2b2o2b2o4bo$21bo5b3o4b2o$2o23bobo2b2obo$obo 13bob2obo3bobo4b2o$2b3o10b4o6bo2b3o$bo3bo8bob4o4bob2o3b3o$b3o2bo2bo4b 2o5bo2bobo2b2o2bo$6bob2o10bobobo2b2obo$b3o2bo2bo4b2o5bo2bo$bo3bo9bo6b 2o$2b3o9bob6o$obo12b4o3b2o$2o11bo6bo2bo$13b3obobob2o$13bo5bobo$14b3ob 2obo$11bobo2bobo2bob2o$9b3obo4bobobobo$8bo9bobo$8b7ob4obo$13bobo4b2o$ 10b2o5b2o3b2o$10bo7bob2o2bo$11bo3b3o2bo2b2o$10b2o3b2o3bo$15b2obob2o$ 17bobo2bo$9b2obob3o2bob2o$9bob2ob2o3bo$13b2o2bobo$10b2o4b2ob2o$10bo$ 12bo$11b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 50 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 8 HEIGHT 600 WIDTH 600 ]] p36, left: (20,5), right: (16,5) (Catagolue: here) Found by Karel Suhajda on June 22, 2013, partial from 2008 (click above to open LifeViewer) RLE: here Plaintext: here	x = 22, y = 35, rule = B3/S23 2b3o$bo16b2o$bo3bo10bob2o$bo2bobo8bo$3bobo2bo9bo$4bo3bo5b2obo$8bo5b2o$ 5b3o6$12b3o$2o10bobo5b2o$o2bo8b3o3bo2bo$b3o14b3o2$b3o14b3o$o2bo8b3o3bo 2bo$2o10bobo5b2o$12b3o6$5b3o$8bo5b2o$4bo3bo5b2obo$3bobo2bo9bo$bo2bobo 8bo$bo3bo10bob2o$bo16b2o$2b3o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 50 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 12 HEIGHT 600 WIDTH 600 ]] p40, left: (20,5), right: (20,5) (Catagolue: here) Found by Dean Hickerson on November 4, 1994 (click above to open LifeViewer) RLE: here Plaintext: here
x = 36, y = 31, rule = B3/S23 3bob3o20b3obo$2bobo7b2o8b2o7bobo$3bo7bo12bo7bo$o4bo8bo6bo8bo4bo$5o5bo 3bo6bo3bo5b5o$5bob4o3bo6bo3b4obo$2bo9bo10bo9bo$2b2o13b2o13b2o$17b2o2$ 14bo6bo$13bo8bo$2b2o9bo8bo9b2o$2bo2bo7bo8bo7bo2bo$3b3o8bo6bo8b3o2$3b3o 8bo6bo8b3o$2bo2bo7bo8bo7bo2bo$2b2o9bo8bo9b2o$13bo8bo$14bo6bo2$17b2o$2b 2o13b2o13b2o$2bo9bo10bo9bo$5bob4o3bo6bo3b4obo$5o5bo3bo6bo3bo5b5o$o4bo 8bo6bo8bo4bo$3bo7bo12bo7bo$2bobo7b2o8b2o7bobo$3bob3o20b3obo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 50 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 12 HEIGHT 600 WIDTH 600 ]] p42, edge: (20,5), centre: (22,5) (Catagolue: here) Two stabilizations found by Noam Elkies in 1997 and 1998 respectively (click above to open LifeViewer) RLE: here Plaintext: here	x = 30, y = 31, rule = B3/S23 12bo4bo$10b3o4b3o$9bo10bo$9b2o8b2o2$7bo14bo$7bo14bo$7bo6b2o6bo$14b2o2$ bo26bo$obo3b3o12b3o3bobo$bo4bobo12bobo4bo$6b3o12b3o4$6b3o12b3o$bo4bobo 12bobo4bo$obo3b3o12b3o3bobo$bo26bo2$14b2o$7bo6b2o6bo$7bo14bo$7bo14bo2$ 9b2o8b2o$9bo10bo$10b3o4b3o$12bo4bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 50 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 12 HEIGHT 600 WIDTH 600 ]] p47, edge: (25,5), centre: (22,5) (p47 pre-pulsar shuttle) (click above to open LifeViewer) RLE: here Plaintext: here	x = 27, y = 25, rule = B3/S23 10b2o3b2o$10bo5bo$2o2b2ob2obo5bob2ob2o2b2o$o2bobobobo7bobobobo2bo$bobo 3bo11bo3bobo$2ob2o2b2o9b2o2b2ob2o3$15b3o$15bobo$15b3o4$15b3o$15bobo$ 15b3o3$2ob2o2b2o9b2o2b2ob2o$bobo3bo11bo3bobo$o2bobobobo7bobobobo2bo$2o 2b2ob2obo5bob2ob2o2b2o$10bo5bo$10b2o3b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 50 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 12 HEIGHT 600 WIDTH 600 ]] p58, left: (29,6), right: (29,6) (p58 pre-pulsar shuttle) (click above to open LifeViewer) RLE: here Plaintext: here
x = 21, y = 29, rule = B3/S23 4bo11bo$4bo11bo$4bo11bo$3b2o11b2o$bo17bo$o4bo9bo4bo$o19bo$2b3o11b3o3$ 12b3o$12bobo$12b3o4$12b3o$12bobo$12b3o3$2b3o11b3o$o19bo$o4bo9bo4bo$bo 17bo$3b2o11b2o$4bo11bo$4bo11bo$4bo11bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 50 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 12 HEIGHT 600 WIDTH 600 ]] p60, left: (30,6), right: (30,6) (Catagolue: here) Found by Noam Elkies on May 30, 1998 (click above to open LifeViewer) RLE: here Plaintext: here	x = 33, y = 51, rule = B3/S23 17b2o$17b2o2$26b3o$26b3o$24bo4b4o$23b6ob3o$23bo3b2o$23bob2o$24b2o2$19b 2o$9b2o7b2obo$10bo5b2o3bo$10bob3ob6o$2o2b2ob2obob4o4bo$o2bobobobo6b3o$ bobo3bo8b3o$2ob2o2b2o$26b2o$26b2o$15b3o$15bobo$15b3o4$15b3o$15bobo$15b 3o$26b2o$26b2o$2ob2o2b2o$bobo3bo8b3o$o2bobobobo6b3o$2o2b2ob2obob4o4bo$ 10bob3ob6o$10bo5b2o3bo$9b2o7b2obo$19b2o2$24b2o$23bob2o$23bo3b2o$23b6ob 3o$24bo4b4o$26b3o$26b3o2$17b2o$17b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 50 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 10 HEIGHT 600 WIDTH 600 ]] p64, left: (29,6), right: (35,6) (Catagolue: here) Found by Aidan F. Pierce and Matthias Merzenich on June 20, 2015 (click above to open LifeViewer) RLE: here Plaintext: here	x = 74, y = 43, rule = B3/S23 29b2obo8bob2o$29bob2o8b2obo$35bo2bo$30b6o2b6o$29bobo10bobo$29b2o3b6o3b 2o$27b2o2b3obo2bob3o2b2o$26bo2b3o10b3o2bo$26b3o16b3o$17b2o10bob2o8b2ob o10b2o$10b2o6bo9bo2bob2o4b2obo2bo9bo6b2o$10bo2bob3o10b2o2b2o6b2o2b2o 10b3obo2bo$12b2obo17bo6bo17bob2o$8b4o3bo42bo3b4o$7bo4b2ob2ob2o34b2ob2o b2o4bo$8b3obob3ob3o32b3ob3obob3o$3bob3o4bobobo3bo32bo3bobobo4b3obo$3b 2o4bo3bo4b3o11b3o4b3o11b3o4bo3bo4b2o$b2o3bob2o2b2obo3b2o11bobo4bobo11b 2o3bob2o2b2obo3b2o$o2b3obob2ob2o4b3o11b3o4b3o11b3o4b2ob2obob3o2bo$b2o 3bo6b3o2bo36bo2b3o6bo3b2o$3bob3o5b3o2bo36bo2b3o5b3obo$3bo2bo6b3o2bo36b o2b3o6bo2bo$4b2obob2ob2o4b3o11b3o4b3o11b3o4b2ob2obob2o$6bob2o2b2obo3b 2o11bobo4bobo11b2o3bob2o2b2obo$2b3o4bo3bo4b3o11b3o4b3o11b3o4bo3bo4b3o$ 2bo2b3o4bobobo3bo32bo3bobobo4b3o2bo$5bo2b3obob3ob3o32b3ob3obob3o2bo$7b o4b2ob2ob2o34b2ob2ob2o4bo$8b4o3bo42bo3b4o$12b2obo17bo6bo17bob2o$10bo2b ob3o10b2o2b2o6b2o2b2o10b3obo2bo$10b2o6bo9bo2bob2o4b2obo2bo9bo6b2o$17b 2o10bob2o8b2obo10b2o$26b3o16b3o$26bo2b3o10b3o2bo$27b2o2b3obo2bob3o2b2o $29b2o3b6o3b2o$29bobo10bobo$30b6o2b6o$35bo2bo$29bob2o8b2obo$29b2obo8bo b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 50 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 8 HEIGHT 600 WIDTH 600 ]] p65, edge: (14,3), centre: (51,3) (Catagolue: here) Found and optimized by various people in July 2021 (click above to open LifeViewer)
x = 30, y = 63, rule = B3/S23 15bo3b2o$14bobo2bo$14bobo3bo$12b2obob3obo$13bo3bo3bo$13bob2ob3ob2o$12b 2ob2obo3bo$11bo2bob4o2bo$12bobo4b2ob2o$13bobo3bo2bo$14bo3bobo2bo$10b2o 9b2o$10bobo5b2o$12bo4b2ob3o$12b2o2b2o5bo$15b3o3b2obo$10b5ob2o4bobo2bo$ 7bobo5bo2bob3o2b3o$7b2obo2bo5b2o2b2o$10bobob3o3bobo2b3o$10bo2b3o3bo3bo 4bo$2o2b2ob2obo3bo4bob2ob2o2bo$o2bobobobo10bobobobob2o$bobo3bo14bo3bo$ 2ob2o2b2o12b2o2b2o2$12b2o$12b2o4b3o$11bobo4bobo$18b3o4$18b3o$11bobo4bo bo$12b2o4b3o$12b2o2$2ob2o2b2o12b2o2b2o$bobo3bo14bo3bo$o2bobobobo10bobo bobob2o$2o2b2ob2obo3bo4bob2ob2o2bo$10bo2b3o3bo3bo4bo$10bobob3o3bobo2b 3o$7b2obo2bo5b2o2b2o$7bobo5bo2bob3o2b3o$10b5ob2o4bobo2bo$15b3o3b2obo$ 12b2o2b2o5bo$12bo4b2ob3o$10bobo5b2o$10b2o9b2o$14bo3bobo2bo$13bobo3bo2b o$12bobo4b2ob2o$11bo2bob4o2bo$12b2ob2obo3bo$13bob2ob3ob2o$13bo3bo3bo$ 12b2obob3obo$14bobo3bo$14bobo2bo$15bo3b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 50 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 8 HEIGHT 600 WIDTH 600 ]] p88, left: (44,9), right: (44,9) (Catagolue: here) Found by Matthias Merzenich in June 2015, reduced in December 2019 (click above to open LifeViewer) RLE: here Plaintext: here	x = 24, y = 31, rule = B3/S23 8b2o4b2o$4bo3bobo2bobo3bo$4bo5bo2bo5bo$4bo4bo4bo4bo$3b2o4b6o4b2o$bo8b 4o8bo$o4bo12bo4bo$o22bo$2b3o14b3o2$9b2o$9b2o4b3o$8bobo4bobo$15b3o4$15b 3o$8bobo4bobo$9b2o4b3o$9b2o2$2b3o14b3o$o22bo$o4bo12bo4bo$bo8b4o8bo$3b 2o4b6o4b2o$4bo4bo4bo4bo$4bo5bo2bo5bo$4bo3bobo2bobo3bo$8b2o4b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 50 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 10 HEIGHT 600 WIDTH 600 ]] p90, left: (45,9), right: (45,9) (Catagolue: here) Found by Dongook Lee on May 2, 2015 (click above to open LifeViewer) RLE: here Plaintext: here

See also

• Newshuttle