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A022316 a(n)=a(n-1)+a(n-2)+1. 0
0, 11, 12, 24, 37, 62, 100, 163, 264, 428, 693, 1122, 1816, 2939, 4756, 7696, 12453, 20150, 32604, 52755, 85360, 138116, 223477, 361594, 585072, 946667, 1531740, 2478408, 4010149, 6488558, 10498708 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..30.

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

FORMULA

G.f. -x*(-11+10*x) / ( (x-1)*(x^2+x-1) ). a(n) = A022102(n)-1. - R. J. Mathar, Apr 07 2011

CROSSREFS

Sequence in context: A041244 A041242 A042019 * A136433 A172173 A061760

Adjacent sequences:  A022313 A022314 A022315 * A022317 A022318 A022319

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified June 19 07:51 EDT 2013. Contains 226399 sequences.