id:A095363 - OEIS Search Results

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a(n)=(-1)^n*b(2n-1,2) where b(n,p)=sum(k=0,n,p^k*C(2*k,k)*C(n+k,n-k)*B(k)) and B(k)= k-th Bernoulli number.

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1, 9, 225, 12593, 1273185, 203040057, 46870307393, 14772264119265, 6093038643430977, 3184951975892962025, 2057288080685705015841, 1609059940237527517292049, 1498486085527475212138686625 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`denominator of a(n)/(n*(2n-1)) = A006519(n)`
	PROGRAM	`(PARI) b(n, p)=sum(k=0, n, (p)^kbinomial(2k, k)binomial(n+k, n-k)bernfrac(k)); a(n)=(-1)^nb(2n-1, 2)`
	CROSSREFS	`Sequence in context: A079727 A128492 A001818 this_sequence A138564 A085799 A075127` `Adjacent sequences: A095360 A095361 A095362 this_sequence A095364 A095365 A095366`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Jul 03 2004`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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