A086954 - OEIS

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A086954

Binomial transform of A061800.

1, 1, 4, 14, 38, 92, 214, 490, 1108, 2474, 5462, 11948, 25942, 55978, 120148, 256682, 546134, 1157804, 2446678, 5155498, 10835284, 22719146, 47535446, 99265196, 206918998, 430615210, 894784852, 1856678570, 3847574870, 7963585196 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	FORMULA	`a(n)=0^n+n2^(n-1)+sum{k=0..floor((n-1)/3) C(n-1, 3k+2) }` `O.g.f.: (1-x)(1-3x+5x^2)/[(1-x+x^2)(-1+2x)^2]. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 02 2008`
	CROSSREFS	`Sequence in context: A187428 A036368 A006071 * A111583 A124615 A114845` `Adjacent sequences: A086951 A086952 A086953 * A086955 A086956 A086957`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Jul 25 2003`

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Last modified February 14 08:58 EST 2012. Contains 205614 sequences.