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A083590 Expansion of 1/((1-5*x)(1-x^5)). 2
1, 5, 25, 125, 625, 3126, 15630, 78150, 390750, 1953750, 9768751, 48843755, 244218775, 1221093875, 6105469375, 30527346876, 152636734380, 763183671900, 3815918359500, 19079591797500, 95397958987501, 476989794937505 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

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).

FORMULA

a(n) = floor(625*(5^(n+1)+1)/3124). - Tani Akinari, Jul 09 2013

MATHEMATICA

CoefficientList[Series[1/((1-5x)(1-x^5)), {x, 0, 40}], x] (* Vincenzo Librandi, Apr 04 2012 *)

PROG

(PARI) Vec(1/(1-5*x)/(1-x^5)+O(x^99)) \\ Charles R Greathouse IV, Apr 04 2012

CROSSREFS

Cf. A083589, A033139, A000975.

Sequence in context: A000351 A050735 A195948 * A097680 A069030 A111993

Adjacent sequences:  A083587 A083588 A083589 * A083591 A083592 A083593

KEYWORD

easy,nonn

AUTHOR

Paul Barry, May 02 2003

STATUS

approved

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Last modified August 24 05:48 EDT 2017. Contains 291052 sequences.