A085281 - OEIS

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A085281

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

1, 2, 5, 13, 35, 97, 275, 793, 2315, 6817, 20195, 60073, 179195, 535537, 1602515, 4799353, 14381675, 43112257, 129271235, 387682633, 1162785755, 3487832977, 10462450355, 31385253913, 94151567435, 282446313697, 847322163875 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	COMMENTS	`Binomial transform of A005578. Binomial transform is A085282.`
	LINKS	`Vincenzo Librandi, Table of n, a(n) for n = 0..500`
	FORMULA	`a(n)=3^n/3+2^n/2+0^n/6` `a(n)=A007689(n-1), n>0. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 12 2008]`
	PROG	`(MAGMA) [3^n/3+2^n/2+0^n/6: n in [0..35]]; // Vincenzo Librandi, May 29 2011`
	CROSSREFS	`Sequence in context: A022855 A091190 A007689 * A082582 A086581 A059027` `Adjacent sequences: A085278 A085279 A085280 * A085282 A085283 A085284`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Jun 25 2003`

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Last modified February 17 14:50 EST 2012. Contains 206050 sequences.