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A022313 a(n)=a(n-1)+a(n-2)+1. 1
0, 8, 9, 18, 28, 47, 76, 124, 201, 326, 528, 855, 1384, 2240, 3625, 5866, 9492, 15359, 24852, 40212, 65065, 105278, 170344, 275623, 445968, 721592, 1167561, 1889154, 3056716, 4945871, 8002588, 12948460, 20951049, 33899510, 54850560, 88750071, 143600632 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

Index to sequences with linear recurrences with constant coefficients, signature (2,0,-1)

FORMULA

G.f. -x*(-8+7*x) / ( (x-1)*(x^2+x-1) ). a(n) = A022099(n)-1. - R. J. Mathar, Apr 07 2011

MATHEMATICA

LinearRecurrence[{2, 0, -1}, {0, 8, 9}, 60] (* From Vladimir Joseph Stephan Orlovsky, Feb 11 2012 *)

CROSSREFS

Sequence in context: A159836 A069809 A067544 * A120311 A061414 A071869

Adjacent sequences:  A022310 A022311 A022312 * A022314 A022315 A022316

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified May 20 02:57 EDT 2013. Contains 225446 sequences.