A245549 State of one-dimensional cellular automaton 'sigma' (Rule 30): 000,001,010,011,100,101,110,111 -> 0,0,0,1,1,1,1,0 at generation n, regarded as a binary number.

1, 111, 11001, 1101111, 110010001, 11011110111, 1100100001001, 110111100111111, 11001000111000001, 1101111011001000111, 110010000101111011001, 11011110011010000101111

Offset

0,2

Comments

See A110240 for decimal equivalents. See A070952 for number of ON cells.

Links

Robert Price, Table of n, a(n) for n = 0..999

N. J. A. Sloane, Illustration of first 20 generations

Eric Weisstein's World of Mathematics, Rule 150

S. Wolfram, A New Kind of Science

Index entries for sequences related to cellular automata

Index to Elementary Cellular Automata

Mathematica

rule=30; rows=20; ca=CellularAutomaton[rule, {{1}, 0}, rows-1, {All, All}]; (* Start with single black cell *) catri=Table[Take[ca[[k]], {rows-k+1, rows+k-1}], {k, 1, rows}]; (* Truncated list of each row *) Table[FromDigits[catri[[k]]], {k, 1, rows}]   (* Binary Representation of Rows *)(* Robert Price, Feb 21 2016 *)

Crossrefs

Cf. A070952, A110240, A070950, A074890, A269160.

Sequence in context: A287130 A287191 A353112 * A266809 A152764 A249183

Adjacent sequences: A245546 A245547 A245548 * A245550 A245551 A245552

Keyword

nonn

Author

N. J. A. Sloane, Jul 28 2014

Status

approved