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A013782 a(n) = 5^(4*n + 1). 2
5, 3125, 1953125, 1220703125, 762939453125, 476837158203125, 298023223876953125, 186264514923095703125, 116415321826934814453125, 72759576141834259033203125, 45474735088646411895751953125 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
LINKS
Tanya Khovanova, Recursive Sequences
FORMULA
From Philippe Deléham, Nov 28 2008: (Start)
a(n) = 625*a(n-1); a(0)=5.
G.f.: 5/(1-625*x). (End)
MATHEMATICA
5^(4*Range[0, 10]+1) (* or *) NestList[625#&, 5, 10] (* Harvey P. Dale, Jul 12 2012 *)
PROG
(Magma) [5^(4*n+1): n in [0..15]]; // Vincenzo Librandi, Jun 28 2011
(PARI) a(n)=5^(4*n+1) \\ Charles R Greathouse IV, Jul 11 2016
CROSSREFS
Subsequence of A000351.
Sequence in context: A361450 A171980 A347607 * A137841 A204940 A172954
KEYWORD
nonn,easy
AUTHOR
STATUS
approved

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Last modified April 16 22:26 EDT 2024. Contains 371755 sequences. (Running on oeis4.)