A160159 First differences of A160158.

2, 2, 4, 8, 8, 4, 8, 12, 8, 8, 16, 24, 20, 12, 20, 20, 8, 8, 16, 24, 20, 16, 28, 32, 24, 32, 56, 68, 52, 40, 52, 36, 8, 8, 16, 24, 20, 16, 28, 32, 24, 32, 56, 68, 52, 44, 60, 48, 24, 32, 56, 68, 56, 60, 88, 88, 80, 120, 180, 188, 144, 128, 132, 68, 8, 8, 16, 24, 20, 16, 28, 32, 24

Offset: 1

Author

Omar E. Pol, May 29 2009

Keywords

• nonn

Links

• 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, A160158, A160162, A160163.

Extensions

Extended beyond a(13) by R. J. Mathar, Jun 01 2009