A267843 Decimal representation of the n-th iteration of the "Rule 225" elementary cellular automaton starting with a single ON (black) cell.

1, 0, 20, 112, 492, 2024, 8164, 32704, 131004, 524216, 2097076, 8388528, 33554348, 134217640, 536870820, 2147483520, 8589934460, 34359738232, 137438953332, 549755813744, 2199023255404, 8796093022056, 35184372088676, 140737488355136, 562949953421116

Offset

0,3

References

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

Links

Robert Price, Table of n, a(n) for n = 0..1000

Eric Weisstein's World of Mathematics, Elementary Cellular Automaton

S. Wolfram, A New Kind of Science

Index entries for sequences related to cellular automata

Index to Elementary Cellular Automata

Mathematica

rule=225; 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]], 2], {k, 1, rows}]   (* Decimal Representation of Rows *)

Crossrefs

Cf. A267841.

Sequence in context: A086605 A321050 A107837 * A271494 A220928 A206368

Adjacent sequences: A267840 A267841 A267842 * A267844 A267845 A267846

Keyword

nonn,easy

Author

Robert Price, Jan 21 2016

Status

approved