A267843 - OEIS

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

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

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,changed

AUTHOR

Robert Price, Jan 21 2016

STATUS

approved