A160738 Toothpick sequence starting from a T formed by 3 toothpicks: a(n)=A160406(n)*3.

0, 3, 6, 12, 18, 24, 30, 42, 54, 60, 66, 78, 90, 102, 120, 150, 174, 180, 186, 198, 210, 222, 240, 270, 294, 306, 324, 354, 384, 420, 480, 558, 606, 612, 618, 630, 642, 654, 672, 702, 726, 738, 756, 786, 816, 852, 912, 990, 1038, 1050, 1068, 1098, 1128, 1164

Offset

0,2

Links

Table of n, a(n) for n=0..53.

David Applegate, Omar E. Pol and N. J. A. Sloane, The Toothpick Sequence and Other Sequences from Cellular Automata, Congressus Numerantium, Vol. 206 (2010), 157-191. [There is a typo in Theorem 6: (13) should read u(n) = 4.3^(wt(n-1)-1) for n >= 2.]

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

Crossrefs

Cf. A139250, A139251, A160736, A160737, A160739, A160740.

Sequence in context: A111041 A079830 A160744 * A028882 A154907 A273015

Adjacent sequences: A160735 A160736 A160737 * A160739 A160740 A160741

Keyword

nonn

Author

Omar E. Pol, May 25 2009, Jun 19 2009

Extensions

More terms from R. J. Mathar, Jul 28 2009

Status

approved