A013834 a(n) = 5^(5*n + 1).

5, 15625, 48828125, 152587890625, 476837158203125, 1490116119384765625, 4656612873077392578125, 14551915228366851806640625, 45474735088646411895751953125, 142108547152020037174224853515625, 444089209850062616169452667236328125

Offset

0,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..100

Tanya Khovanova, Recursive Sequences

Index entries for linear recurrences with constant coefficients, signature (3125).

Formula

From Philippe Deléham, Dec 03 2008: (Start)

a(n) = 3125*a(n-1), n > 0; a(0)=5.

G.f.: 5/(1-3125*x). (End)

Mathematica

NestList[3125#&, 5, 20] (* Harvey P. Dale, Aug 16 2012 *)
5^(5*Range[0, 20]+1) (* Harvey P. Dale, Jul 09 2021 *)

Prog

(Magma) [5^(5*n+1): n in [0..15]]; // Vincenzo Librandi, Jul 07 2011

Crossrefs

Cf. A000351 (5^n), A016861 (5*n+1).

Sequence in context: A297482 A185686 A083976 * A263684 A358810 A191940

Adjacent sequences: A013831 A013832 A013833 * A013835 A013836 A013837

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved