OFFSET
0,2
COMMENTS
Note that these toothpicks are orthogonal to the initial toothpick in the sieve.
A bisection of A139251.
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
CROSSREFS
KEYWORD
nonn
AUTHOR
Omar E. Pol, Jul 14 2009
EXTENSIONS
Extended by R. J. Mathar, Sep 27 2009
STATUS
approved