0,3

Robert Israel, Table of n, a(n) for n = 0..10000

David Applegate, Omar E. Pol and N. J. A. Sloane, The Toothpick Sequence and Other Sequences from Cellular Automata

N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS

A[0]:= 1:A[1]:= 0:

for d from 1 to 7 do

for j from 0 to 2^d-1 do

A[2^d+j]:= 2*A[j]+3*A[j+1]

od od:

seq(A[i], i=0..2^8-1); # Robert Israel, Mar 22 2017

Sequence in context: A152780 A241040 A151705 * A229578 A078992 A062321

Adjacent sequences: A170858 A170859 A170860 * A170862 A170863 A170864

nonn

N. J. A. Sloane, Jan 02 2010

approved