A160165 a(n) = A000969(n) minus toothpick number A139250(n+1).

0, 0, 0, 1, 3, 3, 0, 2, 10, 15, 17, 21, 22, 12, 0, 5, 23, 39, 52, 66, 78, 79, 77, 89, 106, 112, 112, 109, 87, 39, 0, 10, 50, 87, 121, 157, 190, 212, 232, 265, 303, 331, 352, 370, 370, 343, 325, 353, 402, 440, 472, 501, 511, 495, 484, 502, 518, 503, 469, 409, 282

Offset

0,5

Links

Table of n, a(n) for n=0..60.

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) = A000969(n) - A139250(n+1).

Crossrefs

Cf. A000969, A139250, 153006, A153007, A159790, A160166.

Sequence in context: A118522 A179119 A098316 * A084055 A084103 A036477

Adjacent sequences: A160162 A160163 A160164 * A160166 A160167 A160168

Keyword

nonn

Author

Omar E. Pol, May 23 2009

Extensions

More terms from Jinyuan Wang, Mar 14 2020

Status

approved