id:A091004 - OEIS Search Results

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Expansion of x(1-x)/((1-2x)(1+3x)).

+0
6

0, 1, -2, 8, -20, 68, -188, 596, -1724, 5300, -15644, 47444, -141308, 425972, -1273820, 3829652, -11472572, 34450484, -103285916, 309988820, -929704316, 2789637236, -8367863132, 25105686548, -75312865340, 225946984628, -677824176668, 2033506084436 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`2^n=A091003(n)+3A091004(n)+6A091005(n). Inverse binomial transform of A091001.`
	FORMULA	`a(n)=2^n/10-4(-3)^n/15+0^n/6` `a(n+1)= Sum_{k, 0<=k<=n} A112555(n,k)*(-3)^k . [From Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Sep 11 2009]`
	CROSSREFS	`Sequence in context: A099177 A100097 A133467 this_sequence A005559 A001471 A162585` `Adjacent sequences: A091001 A091002 A091003 this_sequence A091005 A091006 A091007`
	KEYWORD	`easy,sign`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Dec 13 2003`

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

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