A265246 - OEIS

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A265246

Triangle read by rows giving successive states of cellular automaton generated by "Rule 149" initiated with a single ON (black) cell.

3

1, 0, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 1, 1

(list; graph; refs; listen; history; text; internal format)

OFFSET

0

COMMENTS

Row n has length 2n+1.

REFERENCES

S. Wolfram, A New Kind of Science, Wolfram Media, 2002; p. 55.

LINKS

Robert Price, Table of n, a(n) for n = 0..9999

Eric Weisstein's World of Mathematics, Elementary Cellular Automaton

Index entries for sequences related to cellular automata

Index to Elementary Cellular Automata

EXAMPLE

Triangle begins:

1;

0,1,1;

0,0,0,1,1;

0,1,1,0,0,1,1;

0,0,0,0,1,0,0,1,1;

...

MATHEMATICA

rule = 149; rows = 20; Flatten[Table[Take[CellularAutomaton[rule, {{1}, 0}, rows-1, {All, All}][[k]], {rows - k + 1, rows + k - 1}], {k, 1, rows}]]

CROSSREFS

Sequence in context: A068426 A267006 A280816 * A138709 A227998 A266514

Adjacent sequences: A265243 A265244 A265245 * A265247 A265248 A265249

KEYWORD

nonn,tabf,easy

AUTHOR

Robert Price, Dec 14 2015

STATUS

approved