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A013835
a(n) = 5^(5*n + 2).
2
25, 78125, 244140625, 762939453125, 2384185791015625, 7450580596923828125, 23283064365386962890625, 72759576141834259033203125, 227373675443232059478759765625, 710542735760100185871124267578125, 2220446049250313080847263336181640625
OFFSET
0,1
FORMULA
From Philippe Deléham, Dec 03 2008: (Start)
a(n) = 3125*a(n-1); a(0)=25.
G.f.: 25/(1-3125*x). (End)
MATHEMATICA
5^(5*Range[0, 20]+2) (* or *) NestList[3125#&, 25, 20] (* Harvey P. Dale, Jan 02 2019 *)
PROG
(Magma) [5^(5*n+2): n in [0..15]]; // Vincenzo Librandi, Jul 07 2011
(Maxima) makelist(5^(5*n+2), n, 0, 20); /* Martin Ettl, Oct 21 2012 */
(PARI) a(n)=5^(5*n+2) \\ Charles R Greathouse IV, Jul 11 2016
CROSSREFS
Sequence in context: A034711 A325215 A076445 * A211600 A068737 A151649
KEYWORD
nonn,easy
STATUS
approved