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A083590
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Expansion of 1/((1-5*x)*(1-x^5)).
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2
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1, 5, 25, 125, 625, 3126, 15630, 78150, 390750, 1953750, 9768751, 48843755, 244218775, 1221093875, 6105469375, 30527346876, 152636734380, 763183671900, 3815918359500, 19079591797500, 95397958987501, 476989794937505
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OFFSET
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0,2
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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 (5,0,0,0,1,-5).
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FORMULA
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a(n) = floor(625*(5^(n+1)+1)/3124). - Tani Akinari, Jul 09 2013
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MATHEMATICA
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CoefficientList[Series[1/((1-5x)(1-x^5)), {x, 0, 40}], x] (* Vincenzo Librandi, Apr 04 2012 *)
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PROG
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(PARI) Vec(1/(1-5*x)/(1-x^5)+O(x^99)) \\ Charles R Greathouse IV, Apr 04 2012
(MAGMA) [Floor(625*(5^(n+1)+1)/3124): n in [0..40]]; // G. C. Greubel, Oct 10 2017
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CROSSREFS
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Cf. A083589, A033139, A000975.
Sequence in context: A000351 A050735 A195948 * A097680 A069030 A111993
Adjacent sequences: A083587 A083588 A083589 * A083591 A083592 A083593
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KEYWORD
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easy,nonn
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AUTHOR
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Paul Barry, May 02 2003
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STATUS
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approved
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