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A076572 a(0)=1 if n>0 a(n)=(-1)^(n+1)/(2n+1)*sum(k=0,n,4^(4k)*B(2k)*C(2n+1,2k)) where B(k) denotes the k-th Bernoulli number. 0
1, 43, 2099, 388663, 139467719, 81165563683, 69426732871739, 81922705364469103, 127490352997174502159, 252973121503691631872923, 623357309124524241322006979, 1867492959566204749744784303143 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..11.

CROSSREFS

Sequence in context: A009987 A267532 A335207 * A015258 A130014 A246535

Adjacent sequences:  A076569 A076570 A076571 * A076573 A076574 A076575

KEYWORD

nonn

AUTHOR

Benoit Cloitre, Oct 19 2002

STATUS

approved

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Last modified June 21 10:09 EDT 2021. Contains 345360 sequences. (Running on oeis4.)