A022326 - OEIS

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A022326

a(n)=a(n-1)+a(n-2)+1.

1, 12, 14, 27, 42, 70, 113, 184, 298, 483, 782, 1266, 2049, 3316, 5366, 8683, 14050, 22734, 36785, 59520, 96306, 155827, 252134, 407962, 660097, 1068060, 1728158, 2796219, 4524378, 7320598, 11844977 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	LINKS	`Index to sequences with linear recurrences with constant coefficients, signature (2,0,-1)`
	FORMULA	`G.f. ( 1+10x-10x^2 ) / ( (x-1)*(x^2+x-1) ). a(n)=A022116(n)-1. - R. J. Mathar, Apr 07 2011`
	CROSSREFS	`Sequence in context: A019292 A175886 A181451 * A127401 A106135 A058073` `Adjacent sequences: A022323 A022324 A022325 * A022327 A022328 A022329`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 15 13:05 EST 2012. Contains 205789 sequences.