A161211 First differences of A161210.

1, 2, 4, 7, 7, 7

Offset

1,2

Comments

Number of toothpicks added at the n-th round.

Links

Table of n, a(n) for n=1..6.

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. A139251, A152980, A160161, A161210, A161213, A161215, A161217.

Sequence in context: A154614 A342616 A373893 * A276807 A363166 A161368

Adjacent sequences: A161208 A161209 A161210 * A161212 A161213 A161214

Keyword

more,nonn

Author

Omar E. Pol, Jun 06 2009

Status

approved