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A012886 a(n+3) = 5*a(n+2)-4*a(n+1)+a(n). 0
1, 2, 3, 8, 30, 121, 493, 2011, 8204, 33469, 136540, 557028, 2272449, 9270673, 37820597, 154292742, 629451995, 2567909604, 10476032782, 42737977489, 174353665921, 711292452431, 2901785575960, 11838111735997 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
FORMULA
G.f. ( -1+3*x+3*x^2 ) / ( -1+5*x-4*x^2+x^3 ). a(n) = -3*A012814(n)+A012814(n+1) -3*A012814(n-1). - R. J. Mathar, Sep 20 2012
MATHEMATICA
LinearRecurrence[{5, -4, 1}, {1, 2, 3}, 30] (* Harvey P. Dale, Sep 16 2023 *)
CROSSREFS
Cf. A012855.
Sequence in context: A004106 A332030 A188498 * A078918 A054104 A053556
KEYWORD
nonn,easy
AUTHOR
STATUS
approved

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Last modified March 19 07:49 EDT 2024. Contains 370958 sequences. (Running on oeis4.)