id:A066999 - OEIS Search Results

Search: id:A066999

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a(n)=3^n*sum(i=1,n,i^3/3^i).

+0
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1, 11, 60, 244, 857, 2787, 8704, 26624, 80601, 242803, 729740, 2190948, 6575041, 19727867, 59186976, 177565024, 532699985, 1598105787, 4794324220, 14382980660, 43148951241, 129446864371, 388340605280, 1165021829664 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`Conjecture: G.f.:(-1-x^2-4x)/((3x-1)*(x-1)^4) [From Maksym Voznyy (voznyy(AT)mail.ru), Jul 27 2009]`
	CROSSREFS	`Sequence in context: A044149 A044530 A050483 this_sequence A055826 A156704 A073625` `Adjacent sequences: A066996 A066997 A066998 this_sequence A067000 A067001 A067002`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Jan 27 2002`

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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.

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