id:A084899 - OEIS Search Results

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Binomial transform of heptagonal numbers A000566.

+0
3

0, 1, 9, 42, 152, 480, 1392, 3808, 9984, 25344, 62720, 152064, 362496, 851968, 1978368, 4546560, 10354688, 23396352, 52494336, 117047296, 259522560, 572522496, 1257242624, 2749366272, 5989466112, 13002342400, 28135391232 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`Binomial transform is A084900. 2nd binomial transform of (0,1,5,0,0,0,....).`
	FORMULA	`G.f.: x(1 + 3x)/(1 - 2x)^3; a(n)=2^(n - 2)*n(5n - 1)/2.`
	CROSSREFS	`Sequence in context: A000971 A061927 A051923 this_sequence A074443 A007227 A116015` `Adjacent sequences: A084896 A084897 A084898 this_sequence A084900 A084901 A084902`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Jun 10 2003`

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Last modified December 19 20:59 EST 2009. Contains 171053 sequences.

AT&T Labs Research