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 A174444 Consider the cellular automaton defined by rule 22 in a finite, circular universe of width n.  Then a single live cell eventually becomes an oscillator of period a(n). 1
 1, 1, 1, 1, 1, 1, 1, 1, 4, 4, 4, 4, 5, 1, 1, 1, 12, 12, 12, 12, 8, 8, 8, 8, 55, 28, 28, 28, 30, 1, 1, 1, 28, 28, 28, 28, 24, 24, 24, 24, 116, 124, 124, 124, 16, 16, 16, 16, 162, 252, 252, 252, 56, 56, 56, 56, 461, 60, 60, 60, 1, 1, 1, 1, 60, 60, 60, 60, 56, 56 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,9 LINKS Alois P. Heinz, Table of n, a(n) for n = 1..184 EXAMPLE For n=9, start with a 9-cell wide grid, and assume that the edges wrap around.  In generation 0, the pattern is 000010000 The progression is 000010000 000111000 001000100 011101110 100000001 010000010 111000111 000101000 001101100 010000010 At which point the pattern becomes an oscillator of period 4.  Thus, a(9)=4. CROSSREFS Sequence in context: A228423 A165923 A228729 * A268237 A276866 A331842 Adjacent sequences:  A174441 A174442 A174443 * A174445 A174446 A174447 KEYWORD nonn AUTHOR Ben Branman, Nov 28 2010 EXTENSIONS More terms from Alois P. Heinz, Jan 17 2011 STATUS approved

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Last modified November 28 16:42 EST 2021. Contains 349413 sequences. (Running on oeis4.)