id:A083669 - OEIS Search Results

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Number of ordered quintuples (a,b,c,d,e), -n<= a,b,c,d,e<=n, such that a+b+c+d+e=0.

+0
1

1, 51, 381, 1451, 3951, 8801, 17151, 30381, 50101, 78151, 116601, 167751, 234131, 318501, 423851, 553401, 710601, 899131, 1122901, 1386051, 1692951, 2048201, 2456631, 2923301, 3453501, 4052751, 4726801, 5481631, 6323451, 7258701 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n)=115/12n^4+115/6n^3+185/12n^2+35/6n+1`
	PROGRAM	`(PARI) a(n)=115/12n^4+115/6n^3+185/12n^2+35/6n+1`
	CROSSREFS	`Cf. A003215, A063496.` `Sequence in context: A007264 A107253 A030535 this_sequence A128511 A020278 A017767` `Adjacent sequences: A083666 A083667 A083668 this_sequence A083670 A083671 A083672`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Jun 14 2003`

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.

AT&T Labs Research