A017957 Powers of sqrt(17) rounded up.

1, 5, 17, 71, 289, 1192, 4913, 20257, 83521, 344366, 1419857, 5854221, 24137569, 99521747, 410338673, 1691869692, 6975757441, 28761784748, 118587876497, 488950340715, 2015993900449, 8312155792153

Offset

0,2

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..800

Mathematica

With[{c=Sqrt[17]}, Ceiling/@(c^Range[0, 30])]  (* Harvey P. Dale, Jan 09 2011 *)
Ceiling[(Sqrt[17])^Range[0, 40]] (* Vincenzo Librandi, Nov 21 2011 *)

Prog

(Magma) [Ceiling(Sqrt(17^n)): n in [0..30]]; // Vincenzo Librandi, Nov 21 2011

Crossrefs

Sequence in context: A149710 A149711 A149712 * A149713 A149714 A149715

Adjacent sequences: A017954 A017955 A017956 * A017958 A017959 A017960

Keyword

nonn

Author

N. J. A. Sloane

Status

approved