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