0,2
N. J. A. Sloane, Table of n, a(n) for n = 0..16383
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, A151551, A151552, A151553.
Sequence in context: A090903 A022878 A022877 * A221028 A011978 A167025
Adjacent sequences: A151551 A151552 A151553 * A151555 A151556 A151557
nonn
N. J. A. Sloane, May 20 2009
approved