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A017945 Powers of sqrt(13) rounded up. 1
1, 4, 13, 47, 169, 610, 2197, 7922, 28561, 102979, 371293, 1338716, 4826809, 17403308, 62748517, 226242996, 815730721, 2941158942, 10604499373, 38235066240, 137858491849, 497055861120, 1792160394037 (list; graph; refs; listen; history; text; internal format)
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: A143566 A098841 A017944 * A055451 A163862 A149440

Adjacent sequences:  A017942 A017943 A017944 * A017946 A017947 A017948

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified September 19 17:19 EDT 2021. Contains 347564 sequences. (Running on oeis4.)