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2, 6, 30, 146, 698, 3358, 16342, 80298, 397170, 1972790, 9824654, 49005250, 244672042, 1222297422, 6108298566, 30531927002, 152630937314, 763068593254, 3815084686078, 19074648589554, 95370918424986, 476847618556286
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,1
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LINKS
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Vincenzo Librandi, Table of n, a(n) for n = 0..1000
Index to sequences with linear recurrences with constant coefficients, signature (10,-32,38,-15).
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FORMULA
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G.f.: 2*(1-7*x+17*x^2-19*x^3)/((1-5*x)*(1-3*x)*(1-x)^2). - Vincenzo Librandi, Feb 26 2013
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MATHEMATICA
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Table[3^n + 5^n - 2 n, {n, 0, 30}] (* or *) CoefficientList[Series[2 (1 - 7 x + 17 x^2 - 19 x^3)/((1 - 5 x) (1 - 3 x) (1 - x)^2), {x, 0, 30}], x] (* Vincenzo Librandi, Feb 26 2013 *)
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PROG
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(MAGMA) [3^n+5^n-2*n: n in [0..30]]; // Vincenzo Librandi, Feb 27 2013
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CROSSREFS
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Cf. A074606, A005058.
Sequence in context: A035105 A073969 A224530 * A055695 A113593 A122763
Adjacent sequences: A120947 A120948 A120949 * A120951 A120952 A120953
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KEYWORD
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nonn,easy
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AUTHOR
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Mohammad K. Azarian, Aug 19 2006
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EXTENSIONS
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Edited by Ray Chandler, Sep 06 2006
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STATUS
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approved
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