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A242329
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a(n) = 5^n + 4.
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3
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5, 9, 29, 129, 629, 3129, 15629, 78129, 390629, 1953129, 9765629, 48828129, 244140629, 1220703129, 6103515629, 30517578129, 152587890629, 762939453129, 3814697265629, 19073486328129, 95367431640629, 476837158203129
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OFFSET
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0,1
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COMMENTS
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Subsequence of A226810. [Bruno Berselli, May 13 2014]
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LINKS
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Vincenzo Librandi, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (6,-5).
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FORMULA
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G.f.: (5-21*x)/((1-x)*(1-5*x)).
a(n) = 6*a(n-1) - 5*a(n-2) for n>1.
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MATHEMATICA
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Table[5^n + 4, {n, 0, 30}]
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PROG
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(MAGMA) [5^n+4: n in [0..30]];
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CROSSREFS
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Cf. similar sequences listed in A253208.
Cf. A003463, A034474, A132079, A178676.
Sequence in context: A006131 A270595 A303988 * A214902 A049602 A119031
Adjacent sequences: A242326 A242327 A242328 * A242330 A242331 A242332
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KEYWORD
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nonn,easy
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AUTHOR
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Vincenzo Librandi, May 13 2014
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STATUS
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approved
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