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1, 13, 105, 853, 7185, 62173, 547065, 4861093, 43437345, 389373613, 3496550025, 31429887733, 282673677105, 2543086531453, 22882895970585, 205921649672773, 1853172776742465, 16677944639119693, 150098449994264745
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OFFSET
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0,2
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LINKS
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Table of n, a(n) for n=0..18.
Index entries for linear recurrences with constant coefficients, signature (15,-59,45).
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FORMULA
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G.f.: 1/(1-9*x)+1/(1-5*x)-1/(1-x). E.g.f.: e^(9*x)+e^(5*x)-e^x.
a(n)=14*a(n-1)-45*a(n-2)-32 with a(0)=1, a(1)=13 - Vincenzo Librandi, Jul 21 2010
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PROG
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(PARI) a(n)=9^n+5^n-1 \\ Charles R Greathouse IV, Jun 11 2015
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CROSSREFS
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Cf. A155624, A155625, A155626, A155627, A155628, A155629, A155630, A155631, A155632, A155633, A155634, A155635.
Sequence in context: A320204 A080422 A030055 * A055902 A295249 A295648
Adjacent sequences: A155633 A155634 A155635 * A155637 A155638 A155639
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KEYWORD
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nonn,easy
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AUTHOR
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Mohammad K. Azarian, Jan 30 2009
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STATUS
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approved
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