Centinal

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Centinal
x = 52, y = 17, rule = B3/S23 2o48b2o$bo48bo$bobo21b2o21bobo$2b2o8bo12b2o12b2o7b2o$11b2o26bobo$10b2o 29bo$11b2o2b2o22b3o4$11b2o2b2o22b3o$10b2o29bo$11b2o26bobo$2b2o8bo12b2o 12b2o7b2o$bobo21b2o21bobo$bo48bo$2o48b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 10 ZOOM 10 ]]
Pattern type Oscillator
Oscillator type Shuttle
Number of cells 70
Bounding box 52×17
Period 100
Mod 100
Heat 52
Volatility 0.95
Strict volatility 0.95
Discovered by Bill Gosper
Year of discovery Unknown

Centinal is a period-100 shuttle oscillator that was found by Bill Gosper no earlier than 1973 and no later than 1987, being the first oscillator of this period to be discovered. It combines the mechanisms of the period 46 and period 54 shuttles. Its duoplet spark is able to reflect gliders by 90 degrees, a property that Gosper used circa 1984 to construct a p1100 MWSS gun.[1][2]

Gallery

x = 52, y = 22, rule = b3/s23 25bo26b$23b2o27b$24b2o26b3$2o48b2o$bo48bob$bobo36bo7bobob$2b2o7b2o5b2o 13bo5bo2bo5b2o2b$18bobo11b2o5bo12b$12b2o6bo10b2o10bo8b$8bobo2bo4b3o11b 2o4b2o3bo8b$9b3obo24b5o9b2$9b3obo24b5o9b$8bobo2bo4b3o11b2o4b2o3bo8b$ 12b2o6bo10b2o10bo8b$18bobo11b2o5bo12b$2b2o7b2o5b2o13bo5bo2bo5b2o2b$bob o36bo7bobob$bo48bob$2o48b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 GPS 10 AUTOSTART LOOP 70 PAUSE 1 ]]
Centinal reflecting a glider
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RLE: here Plaintext: here
x = 52, y = 23, rule = B3/S23 22bo4bo$20b2ob4ob2o$22bo4bo4$2o48b2o$bo48bo$bobo44bobo$2b2o32bo11b2o$ 14bo22bo$13b3o3b2o10b2o5bo$14b2o3b2o10b2o2bobo$15bo20bo2$15bo20bo$14b 2o3b2o10b2o2bobo$13b3o3b2o10b2o5bo$14bo22bo$2b2o32bo11b2o$bobo44bobo$b o48bo$2o48b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 50 THUMBSIZE 2 ]]
pentadecathlon on centinal
smallest known p300 oscillator by population
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RLE: here Plaintext: here
Catagoluehere

See also

References

  1. Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
  2. Early MWSS gun in Golly 1.3 at Game of Life News. Posted by Dave Greene on December 17, 2007.

External links

  • 70P100.1 at Heinrich Koenig's Game of Life Object Catalogs