p60 glider shuttle

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p60 glider shuttle
x = 35, y = 7, rule = B3/S23 2bo4bo$2ob4ob2o$2bo4bo$16bo$17b2o8bo4bo$16b2o7b2ob4ob2o$27bo4bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 10 LOOP 60 THUMBSIZE 2 WIDTH 480 HEIGHT 360 ]]
Pattern type Oscillator
Oscillator type Relay
Number of cells 29
Bounding box 41 × 13
Period 60 (mod: 30)
Heat 49.07
Volatility 1.00 | 0.30
Kinetic symmetry n.c
Discovered by Unknown
Year of discovery 1971

The p60 glider shuttle is a period-60 oscillator consisting of a glider reflected by two pentadecathlons. It was the first discovered p60 oscillator, as described in the March 1971 Lifeline issue.[1][2]

Moving the pentadecathlons apart by 15 full diagonals increases the period by 120, so all periods of the form 60 + 120n can be constructed with 29 cells.

See also

References

  1. ↑ Robert Wainwright (March 1971). Lifeline, vol 1, page 5.
  2. ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.