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A090646 a(n)=(-1)^(n+1)*6*(36^n-1)*B(2n) where B(k) denotes the k-th Bernoulli number. 0
0, 35, 259, 6665, 335923, 27484625, 3305838667, 548549148665, 120046523944291, 33497222700551585, 11607372388687929595, 4890106826755096362185, 2461501533722532841839379, 1459003091037934911760465265 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..13.

PROG

(PARI) a(n)=(-1)^(n+1)*6*(36^n-1)*bernfrac(2*n)

CROSSREFS

Sequence in context: A067238 A267022 A145014 * A220929 A251931 A267627

Adjacent sequences:  A090643 A090644 A090645 * A090647 A090648 A090649

KEYWORD

nonn

AUTHOR

Benoit Cloitre, Dec 13 2003

STATUS

approved

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Last modified July 24 20:26 EDT 2021. Contains 346273 sequences. (Running on oeis4.)