Table of n, a(n) for n=1..49.
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(n) = A159796(n+1)/4.
Cf. A139250, A153000, A159786, A159789, A159796.
Sequence in context: A237518 A274649 A258234 * A185579 A197134 A049470
Adjacent sequences: A159796 A159797 A159798 * A159800 A159801 A159802
Omar E. Pol, Jun 13 2009
More terms from Colin Barker, Apr 19 2015