A017940 Powers of sqrt(12) rounded down.

1, 3, 12, 41, 144, 498, 1728, 5985, 20736, 71831, 248832, 861979, 2985984, 10343751, 35831808, 124125023, 429981696, 1489500287, 5159780352, 17874003451, 61917364224, 214488041413, 743008370688

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn

Links

• Vincenzo Librandi, Table of n, a(n) for n = 0..900

Crossrefs

Cf. A010469 (sqrt(12)).

Programs

Magma

[Floor(Sqrt(12^n)): n in [0..30]]; // Vincenzo Librandi, Jun 24 2011

Mathematica

Floor[(Sqrt[12])^Range[0,30]] (* Harvey P. Dale, Aug 26 2019 *)

PARI

a(n)=sqrtint(12^n) \\ Charles R Greathouse IV, Nov 18 2011

Formula

a(n) = floor(sqrt(12^n)). - Vincenzo Librandi, Jun 24 2011