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A162627
a(n) = A162625(n+1)/2.
1
2, 3, 3, 4, 6, 7, 5, 4, 6, 8, 10, 14, 18, 17, 9, 4, 6, 8, 10, 14, 18, 18, 14, 14, 20, 26, 34, 46, 52, 41, 17, 4, 6, 8, 10, 14, 18, 18, 14, 14, 20, 26, 34, 46, 52, 42, 22, 14, 20, 26, 34, 46, 54, 50, 42, 48, 66, 86, 114, 144, 144, 97, 33, 4, 6, 8, 10, 14, 18, 18
OFFSET
1,1
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
nonn
AUTHOR
Omar E. Pol, Aug 05 2009
EXTENSIONS
More terms from Jinyuan Wang, Mar 03 2020
STATUS
approved