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A151887
Number of toothpicks turned OFF at generation n in A151885.
2
0, 0, 0, 2, 0, 10, 0, 10, 0, 38, 0, 10, 0, 50, 0, 34, 0, 138, 0, 10, 0, 50, 0, 50, 0, 190, 0, 34, 0, 170, 0, 122, 0, 494, 0, 10, 0, 50, 0, 50, 0, 190, 0, 50, 0, 250, 0, 170, 0, 690, 0, 34, 0, 170, 0, 170, 0, 646, 0, 122, 0, 610, 0, 434, 0, 1762
OFFSET
0,4
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.]
FORMULA
a(2n) = 0 for all n >= 0.
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jul 23 2009
EXTENSIONS
Terms after a(8) from Nathaniel Johnston, Apr 02 2011
STATUS
approved