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 A132139 a(n) = f(n,1) with f(m,x) = if m<3 then (if m=1 then x else 0) else (if m mod 3 = 0 then 0 else f([m/3], x*(1 + m mod 3) + 1)). 3
 1, 0, 0, 3, 4, 0, 0, 0, 0, 0, 0, 0, 7, 9, 0, 10, 13, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 15, 19, 0, 21, 27, 0, 0, 0, 0, 22, 28, 0, 31, 40, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 LINKS R. Zumkeller, Table of n, a(n) for n = 1..10000 CROSSREFS Sequence in context: A292832 A264932 A171604 * A045951 A238797 A025120 Adjacent sequences:  A132136 A132137 A132138 * A132140 A132141 A132142 KEYWORD nonn AUTHOR Reinhard Zumkeller, Aug 20 2007 STATUS approved

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Last modified December 8 12:07 EST 2019. Contains 329862 sequences. (Running on oeis4.)