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A187217
Number of Q-toothpicks added at n-th stage to the structure of A187216.
2
0, 2, 6, 8, 14, 22, 30, 22, 38, 54, 70, 22, 38, 54, 70, 54, 102, 150, 134, 22, 38, 54, 70, 54, 102, 150, 134, 54, 102, 150, 166, 182, 326, 406, 262, 22, 38, 54, 70, 54, 102, 150, 134, 54, 102, 150, 166, 182, 326, 406, 262, 54, 102, 150, 166, 182, 326, 406, 294, 182, 326
OFFSET
0,2
COMMENTS
Essentially the first differences of A187216.
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.]
CROSSREFS
KEYWORD
nonn
AUTHOR
Omar E. Pol, Mar 30 2011
EXTENSIONS
a(15) - a(60) from Nathaniel Johnston, Apr 15 2011
STATUS
approved