A159785 a(n) = A152980(n)*3.

3, 6, 9, 9, 12, 21, 24, 15, 12, 21, 27, 30, 45, 66, 60, 27, 12, 21, 27, 30, 45, 66, 63, 42, 45, 69, 84, 105, 156, 192, 144, 51, 12, 21, 27, 30, 45, 66, 63, 42, 45, 69, 84, 105, 156, 192, 147, 66, 45, 69, 84, 105, 156, 195, 168, 129, 159, 222, 273, 366, 504, 528

Offset

1,1

Links

Table of n, a(n) for n=1..62.

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

Toothpick sequence: A139250.

Cf. A139251, A147646, A152968, A152978, A152980, A153004, A153006.

Sequence in context: A329213 A007844 A224523 * A057338 A337603 A077856

Adjacent sequences: A159782 A159783 A159784 * A159786 A159787 A159788

Keyword

nonn

Author

Omar E. Pol, May 02 2009

Extensions

More terms from 3*A152980(n) by Jinyuan Wang, Mar 14 2020

Status

approved