A162627 a(n) = A162625(n+1)/2.

2, 3, 3, 4, 6, 7, 5, 4, 6, 8, 10, 14, 18, 17, 9, 4, 6, 8, 10, 14, 18, 18, 14, 14, 20, 26, 34, 46, 52, 41, 17, 4, 6, 8, 10, 14, 18, 18, 14, 14, 20, 26, 34, 46, 52, 42, 22, 14, 20, 26, 34, 46, 54, 50, 42, 48, 66, 86, 114, 144, 144, 97, 33, 4, 6, 8, 10, 14, 18, 18

Offset

1,1

Links

Table of n, a(n) for n=1..70.

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, A147614, A152968, A160421, A160423, A162625.

Sequence in context: A145806 A100989 A188215 * A023158 A120882 A102187

Adjacent sequences: A162624 A162625 A162626 * A162628 A162629 A162630

Keyword

nonn

Author

Omar E. Pol, Aug 05 2009

Extensions

More terms from Jinyuan Wang, Mar 03 2020

Status

approved