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A094938 a(n)=(-36^n/18)*B(2n,1/6)/B(2n,1/3) where B(n,x) is the n-th Bernoulli polynomial. 0
1, 63, 2511, 92583, 3352671, 120873303, 4353033231, 156723545223, 5642176768191, 203119525916343, 7312313393341551, 263243376303474663, 9476762394213697311, 341163453817290588183, 12281884406052838539471 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

FORMULA

a(n)=9^n/18*(4^n-2); a(n)=38*a(n-1)-45*a(n-2)

PROG

(PARI) B(n, x)=sum(i=0, n, binomial(n, i)*bernfrac(i)*x^(n-i)); a(n)=(-36^n/18)*B(n, 1/6)/B(n, 1/3)

CROSSREFS

Cf. A096054.

Sequence in context: A143401 A075516 A004376 * A006110 A132051 A167987

Adjacent sequences:  A094935 A094936 A094937 * A094939 A094940 A094941

KEYWORD

nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Jun 19 2004

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Last modified February 16 23:45 EST 2012. Contains 205978 sequences.