1,1

Table of n, a(n) for n=1..63.

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

Cf. A139250, A147646, A168112, A168113.

Sequence in context: A053030 A189822 A051205 * A220656 A324143 A050244

Adjacent sequences: A168111 A168112 A168113 * A168115 A168116 A168117

nonn

Omar E. Pol, Dec 07 2009

Terms after a(15) from Nathaniel Johnston, Mar 28 2011

approved