id:A067534 - OEIS Search Results

Search: id:A067534

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a(n)=4^n*sum(i=1,n,i^4/4^i).

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1

1, 20, 161, 900, 4225, 18196, 75185, 304836, 1225905, 4913620, 19669121, 78697220, 314817441, 1259308180, 5037283345, 20149198916, 80596879185, 322387621716, 1289550617185, 5158202628740, 20632810709441 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`1/81 * [380*4^n - 27n^4 - 144n^3 - 360n^2 - 528n - 380]. - R. Stephan, May 08 2004`
	CROSSREFS	`Adjacent sequences: A067531 A067532 A067533 this_sequence A067535 A067536 A067537` `Sequence in context: A125357 A126515 A118676 this_sequence A041768 A056114 A056932`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Jan 27 2002`

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Last modified May 16 23:01 EDT 2008. Contains 139884 sequences.

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