OFFSET

1,3

COMMENTS

First 23 terms the same as A151837.

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

EXAMPLE

If written as a triangle, begins:

1;

1,3;

1,3,3,7;

1,3,3,7,5,7,9,17;

1,3,3,7,5,7,9,17,7,7,9,17,17,19,23,39;

CROSSREFS

KEYWORD

more,nonn,tabf

AUTHOR

Omar E. Pol, May 29 2010

STATUS

approved