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A173462
a(n) = A173461(n+1)/2.
4
4, 6, 4, 26, 6, 6, 42, 18, 14, 94, 6, 6, 42, 18, 18, 126, 18, 18, 126, 54, 46, 314, 6, 6, 42, 18, 18, 126, 18, 18, 126, 54, 54, 378, 18, 18, 126, 54, 54, 378, 54, 54, 378, 162, 146, 1006, 6, 6, 42, 18, 18, 126, 18, 18, 126, 54, 54
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.]
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Omar E. Pol, Feb 18 2010
EXTENSIONS
More terms from Jinyuan Wang, Mar 02 2020
STATUS
approved