A017926 Powers of sqrt(7) rounded to nearest integer.

1, 3, 7, 19, 49, 130, 343, 907, 2401, 6352, 16807, 44467, 117649, 311270, 823543, 2178890, 5764801, 15252230, 40353607, 106765609, 282475249, 747359260, 1977326743, 5231514823, 13841287201, 36620603759

Offset

0,2

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..2000

Mathematica

Floor[(Sqrt[7]^Range[0, 40]+1/2)] (* Vincenzo Librandi, Nov 19 2011 *)

Prog

(PARI) a(n)=round(sqrt(7)^n) \\ Charles R Greathouse IV, Nov 18 2011
(Magma) [Round(Sqrt(7)^n): n in [0..40]]; // Vincenzo Librandi, Nov 19 2011

Crossrefs

Sequence in context: A191824 A191757 A061646 * A017927 A116903 A298416

Adjacent sequences: A017923 A017924 A017925 * A017927 A017928 A017929

Keyword

nonn

Author

N. J. A. Sloane

Status

approved