A191559 a(n) = 25^(4*n+1).

25, 9765625, 3814697265625, 1490116119384765625, 582076609134674072265625, 227373675443232059478759765625, 88817841970012523233890533447265625, 34694469519536141888238489627838134765625, 13552527156068805425093160010874271392822265625

Offset

0,1

Comments

Subsequence of A000351.

Links

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

Index entries for linear recurrences with constant coefficients, signature (390625).

Formula

G.f.: (25)/(1-390625*x). - Vincenzo Librandi, Jun 16 2016

a(n) = 5^(8*n+2) = 5^(2*(4*n+1)).

Mathematica

Table[25^(4 n + 1), {n, 0, 10}] (* Vincenzo Librandi, Jun 12 2016 *)

Prog

(Magma) [25^(4*n+1): n in [0..10]]

Crossrefs

Cf. A000351.

Sequence in context: A251362 A196520 A228536 * A279039 A237522 A347810

Adjacent sequences: A191556 A191557 A191558 * A191560 A191561 A191562

Keyword

nonn,easy

Author

Vincenzo Librandi, Jul 07 2011

Status

approved