id:A083012 - OEIS Search Results

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a(n)=sum(k=0,n-1,8^k*B(k)*C(n,k)) where B(k) is the k-th Bernoulli number and C(n,k)=binomial(n,k).

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0, 1, -7, 21, 49, -595, -1911, 39109, 165473, -4525731, -23883335, 805349237, 5097585297, -203564524787, -1503073984279, 69292329479205, 584713994953921, -30553447357629763, -290046835163027943, 16939595863125337813, 178676615255242261745 (list; graph; listen)

	OFFSET	`1,3`
	PROGRAM	`(PARI) a(n)=sum(k=0, n-1, 8^kbinomial(n, k)bernfrac(k))`
	CROSSREFS	`Cf. A001469.` `Sequence in context: A146637 A146701 A146613 this_sequence A070313 A146733 A146709` `Adjacent sequences: A083009 A083010 A083011 this_sequence A083013 A083014 A083015`
	KEYWORD	`sign`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), May 31 2003`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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