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A268575
The number of alive cells in Conway's Game of Life starting with the "Die hard" initial pattern.
0
7, 8, 8, 11, 10, 10, 12, 12, 16, 16, 24, 18, 17, 19, 19, 25, 21, 30, 19, 21, 18, 18, 22, 20, 20, 20, 23, 20, 23, 20, 15, 23, 15, 16, 16, 15, 16, 17, 20, 18, 19, 21, 25, 27, 30, 33, 30, 36, 30, 29, 24, 22, 22, 23, 23, 37, 26, 26, 28, 31, 33, 35, 30, 30, 25, 23, 17, 15, 12, 16, 12, 14, 11, 8, 9, 10, 13, 15, 22, 13, 15, 16, 17, 17, 24, 20, 25, 21, 29, 23, 27, 28, 37, 32, 40, 22, 30, 23, 21, 21, 23, 17, 21, 17, 16, 16, 20, 15, 23, 18, 21, 20, 23, 20, 22, 13, 15, 10, 13, 9, 11, 7, 5, 7, 6, 5, 6, 5, 3, 2, 0
OFFSET
0,1
COMMENTS
Population vanishes after 130 generations.
LINKS
LifeWiki, Die hard
Eric Weisstein's MathWorld, Game of Life
MATHEMATICA
maxIter = 200; halfWidth = h = 100; GameOfLife = {224, {2, {{2, 2, 2}, {2, 1, 2}, {2, 2, 2}}}, {1, 1}}; grids = CellularAutomaton[GameOfLife, SparseArray[{{h + 3, h + 2} -> 1, {h - 3, h + 1} -> 1, {h - 2, h + 1} -> 1, {h - 2, h} -> 1, {h + 2, h} -> 1, {h + 3, h} -> 1, {h + 4, h} -> 1} ], 2h]; a[n_] := grids[[n + 1]] // Flatten // Total; Table[a[n], {n, 0, maxIter}] //. {a__, 0, 0} :> {a, 0}
CROSSREFS
Sequence in context: A021563 A377603 A333938 * A198814 A254272 A284363
KEYWORD
nonn,fini,full
AUTHOR
STATUS
approved