A077973 - OEIS

This site is supported by donations to The OEIS Foundation.

A077973

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

1, -1, 1, 1, -3, 5, -3, -3, 13, -19, 13, 13, -51, 77, -51, -51, 205, -307, 205, 205, -819, 1229, -819, -819, 3277, -4915, 3277, 3277, -13107, 19661, -13107, -13107, 52429, -78643, 52429, 52429, -209715, 314573, -209715, -209715, 838861, -1258291, 838861, 838861, -3355443, 5033165, -3355443 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,5`
	COMMENTS	`Essentially the same as A077950.`
	FORMULA	`a(n)=-a(n-1)+2a(n-3). - Paul Curtz (bpcrtz(AT)free.fr), Apr 23 2008`
	CROSSREFS	`Sequence in context: A133773 A077934 A077950 * A175999 A010703 A107489` `Adjacent sequences: A077970 A077971 A077972 * A077974 A077975 A077976`
	KEYWORD	`sign`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Nov 17 2002, Jun 17 2007`

Content is available under The OEIS End-User License Agreement .

Last modified February 17 18:38 EST 2012. Contains 206074 sequences.