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A081865 a(n)=sigma_7(2n-1). 0
1, 2188, 78126, 823544, 4785157, 19487172, 62748518, 170939688, 410338674, 893871740, 1801914272, 3404825448, 6103593751, 10465138360, 17249876310, 27512614112, 42637932336, 64340198544, 94931877134, 137293757384 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

Cf. A013955.

Sequence in context: A017431 A079231 A017563 * A085442 A134158 A176772

Adjacent sequences:  A081862 A081863 A081864 * A081866 A081867 A081868

KEYWORD

nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 12 2003

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Last modified February 14 17:05 EST 2012. Contains 205642 sequences.