A017956 Powers of sqrt(17) rounded to nearest integer.

1, 4, 17, 70, 289, 1192, 4913, 20257, 83521, 344366, 1419857, 5854220, 24137569, 99521747, 410338673, 1691869691, 6975757441, 28761784748, 118587876497, 488950340715, 2015993900449, 8312155792152

Offset

0,2

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

Mathematica

Floor[(Sqrt[17])^Range[0, 25]+1/2] (* Harvey P. Dale, Sep 19 2011 *)

Prog

(PARI) a(n)=round(sqrt(17)^n) \\ Charles R Greathouse IV, Nov 18 2011
(Magma) [Round(Sqrt(17)^n): n in [0..40]]; // Vincenzo Librandi, Nov 19 2011

Crossrefs

Sequence in context: A172447 A291009 A017955 * A136792 A188482 A364705

Adjacent sequences: A017953 A017954 A017955 * A017957 A017958 A017959

Keyword

nonn

Author

N. J. A. Sloane

Status

approved