A151888 Net increase in number of ON toothpicks at generation n in A151885.

0, 1, 2, 2, 6, -6, 10, 2, 22, -34, 10, 10, 30, -38, 34, 10, 78, -134, 10, 10, 30, -30, 50, 10, 110, -178, 34, 34, 102, -126, 122, 34, 278, -490, 10, 10, 30, -30, 50, 10, 110, -170, 50, 50, 150, -190, 170, 50, 390, -678, 34, 34

Offset: 0

Author

N. J. A. Sloane, Jul 23 2009

Keywords

• sign

Links

• Nathaniel Johnston, Table of n, a(n) for n = 0..926
• 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
• N. J. A. Sloane, Illustration of first 8 generations

Crossrefs

Cf. A151885-A151888, A139250, A139251, A147562, A079314.

Formula

a(n) = A151886(n)+A151887(n).

Extensions

Terms after a(8) from Nathaniel Johnston, Apr 02 2011