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A106804 G.f.: (2-9x-4x^2)*x / [(1-5x+x^2)*(1-5x-x^2)]. 0
0, 2, 11, 56, 285, 1452, 7406, 37816, 193295, 989002, 5065051, 25963276, 133199780, 683904902, 3514119571, 18069536436, 92975574865, 478701242652, 2466137174466, 12711910214796, 65558648361175, 338267429484502 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..21.

Index entries for linear recurrences with constant coefficients, signature (10,-25,0,1).

MATHEMATICA

M = {{0, 0, 0, 1}, {1, 5, 0, 0}, {0, 1, 0, 0}, {0, 0, 1, 5}};

v[1] = {0, 1, 1, 2}; v[n_] := v[n] = M.v[n - 1]; terms = 20; a = Table[v[n][[1]], {n, 1, terms}]

LinearRecurrence[{10, -25, 0, 1}, {0, 2, 11, 56}, 30] (* Harvey P. Dale, Nov 29 2018 *)

CROSSREFS

Sequence in context: A212388 A198769 A037554 * A213098 A041129 A037490

Adjacent sequences:  A106801 A106802 A106803 * A106805 A106806 A106807

KEYWORD

nonn

AUTHOR

Roger L. Bagula, May 30 2005

EXTENSIONS

Edited by the Associate Editors of the OEIS, Apr 09 2009

Mathematica code fixed by Olivier Gérard, Dec 13 2011

STATUS

approved

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Last modified April 1 08:36 EDT 2020. Contains 333159 sequences. (Running on oeis4.)