A160730 Toothpick sequence starting from a right angle formed by two toothpicks.

0, 2, 4, 8, 14, 20, 26, 38, 52, 64, 70, 82, 96, 112, 130, 162, 196, 216, 222, 234, 248, 264, 282, 314, 348, 372, 390, 422, 460, 504, 566, 658, 740, 776, 782, 794, 808, 824, 842, 874, 908, 932, 950, 982, 1020, 1064

Offset

0,2

Links

Nathaniel Johnston, Table of n, a(n) for n = 0..255

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

Nathaniel Johnston, C script

Crossrefs

Cf. A139250, A160736, A160731.

Sequence in context: A370047 A169926 A140164 * A190402 A175300 A316699

Adjacent sequences: A160727 A160728 A160729 * A160731 A160732 A160733

Keyword

nonn

Author

Omar E. Pol, May 25 2009

Extensions

Terms after a(11) from Nathaniel Johnston, Mar 28 2011

Status

approved