0,2

Table of n, a(n) for n=0..69.

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, A151550, A151552.

Sequence in context: A003563 A336753 A023833 * A021690 A109896 A004221

Adjacent sequences: A151548 A151549 A151550 * A151552 A151553 A151554

nonn

N. J. A. Sloane, May 19 2009

approved