A160718 a(n) = A160406(n+2)/2.

1, 2, 3, 4, 5, 7, 9, 10, 11, 13, 15, 17, 20, 25, 29, 30, 31, 33, 35, 37, 40, 45, 49, 51, 54, 59, 64, 70, 80, 93, 101, 102, 103, 105, 107, 109, 112, 117, 121, 123, 126, 131, 136, 142, 152, 165, 173, 175, 178, 183, 188, 194, 204, 217, 226, 232, 242, 256, 271, 292

Offset

0,2

Links

Table of n, a(n) for n=0..59.

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

Formula

a(n) = A160719(n) + 1 = -a(n-1) + n + (A139250(n+1) + 5)/4 for n > 0. - Jinyuan Wang, Mar 04 2020

Crossrefs

Cf. A139250, A152998, A153000, A160406, A160407, A160719.

Sequence in context: A191917 A228894 A325367 * A122090 A066050 A004050

Adjacent sequences: A160715 A160716 A160717 * A160719 A160720 A160721

Keyword

nonn

Author

Omar E. Pol, Jun 10 2009

Extensions

More terms from Jinyuan Wang, Mar 04 2020

Status

approved