A017928 Powers of sqrt(8) rounded down.

1, 2, 8, 22, 64, 181, 512, 1448, 4096, 11585, 32768, 92681, 262144, 741455, 2097152, 5931641, 16777216, 47453132, 134217728, 379625062, 1073741824, 3037000499, 8589934592, 24296003999, 68719476736

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn

Links

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

Crossrefs

Cf. A017910.

Programs

Magma

[Floor(Sqrt(8^n)): n in [0..40]]; // Vincenzo Librandi, Nov 20 2011

Mathematica

Floor[(Sqrt[8])^Range[0,40]] (* Harvey P. Dale, Jun 20 2011 *)

PARI

a(n)=sqrtint(8^n) \\ Charles R Greathouse IV, Nov 18 2011

Formula

a(n) = A017910(3n). - R. J. Mathar, Apr 28 2008