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A034730 Dirichlet convolution of b_n=1 with c_n=3^(n-1). 1
1, 4, 10, 31, 82, 256, 730, 2218, 6571, 19768, 59050, 177430, 531442, 1595056, 4783060, 14351125, 43046722, 129146980, 387420490, 1162281262, 3486785140, 10460412256, 31381059610, 94143358444, 282429536563, 847289140888 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

FORMULA

G.f.: Sum_{n>0} x^n/(1-3*x^n). - Vladeta Jovovic (vladeta(AT)eunet.rs), Nov 14 2002

CROSSREFS

Cf. A034729.

Sequence in context: A001551 A067142 A145453 * A095127 A006342 A135831

Adjacent sequences:  A034727 A034728 A034729 * A034731 A034732 A034733

KEYWORD

nonn

AUTHOR

Erich Friedman (erich.friedman(AT)stetson.edu)

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Last modified February 16 17:11 EST 2012. Contains 205938 sequences.