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A161417
First differences of A160416.
1
1, 7, 3, 21, 7, 41, 9, 57, 13
OFFSET
1,2
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.]
KEYWORD
more,nonn
AUTHOR
Omar E. Pol, May 20 2009, Jun 14 2009
STATUS
approved