A017945 Powers of sqrt(13) rounded up.

1, 4, 13, 47, 169, 610, 2197, 7922, 28561, 102979, 371293, 1338716, 4826809, 17403308, 62748517, 226242996, 815730721, 2941158942, 10604499373, 38235066240, 137858491849, 497055861120, 1792160394037

Offset

0,2

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..900

Mathematica

Ceiling[(Sqrt[13])^Range[0, 25]]  (* Harvey P. Dale, Apr 02 2011 *)

Prog

(Magma) [Ceiling(Sqrt(13^n)): n in [0..30]]; // Vincenzo Librandi, Nov 21 2011

Crossrefs

Sequence in context: A098841 A363547 A017944 * A055451 A163862 A149440

Adjacent sequences: A017942 A017943 A017944 * A017946 A017947 A017948

Keyword

nonn

Author

N. J. A. Sloane

Status

approved