OFFSET
0,3
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
FORMULA
a(0) = 0, a(n) = A172305(n+1)/4, for n>=1.
CROSSREFS
KEYWORD
more,nonn
AUTHOR
Omar E. Pol, Feb 06 2010
EXTENSIONS
More terms from Colin Barker, Apr 19 2015
STATUS
approved