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A091760 0^n+3((n+2)^n/(n+3)-(-1)^n/(n+3)). 0
1, 3, 9, 63, 555, 6303, 87381, 1434891, 27272727, 589486923, 14288622513, 384034370151, 11338782475059, 364911575317383, 12716046006693165, 477070508584969299, 19174662804725408175, 822058028667720327891 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..17.

CROSSREFS

Cf. A083063.

Sequence in context: A108557 A109285 A245165 * A144525 A276535 A228776

Adjacent sequences:  A091757 A091758 A091759 * A091761 A091762 A091763

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Feb 03 2004

STATUS

approved

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Last modified November 22 00:32 EST 2019. Contains 329383 sequences. (Running on oeis4.)