A017970 Powers of sqrt(22) rounded down.

1, 4, 22, 103, 484, 2270, 10648, 49943, 234256, 1098758, 5153632, 24172676, 113379904, 531798888, 2494357888, 11699575548, 54875873536, 257390662067, 1207269217792, 5662594565481, 26559922791424

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn

Links

• Vincenzo Librandi, Table of n, a(n) for n = 0..700

Crossrefs

Cf. A010478 (sqrt(22)).

Programs

Magma

[Floor(Sqrt(22^n)): n in [0..30]]; // Vincenzo Librandi, Jun 24 2011

Mathematica

Floor[(Sqrt[22])^Range[0,30]] (* Harvey P. Dale, Jul 16 2020 *)

PARI

a(n)=sqrtint(22^n) \\ Charles R Greathouse IV, Nov 18 2011

Formula

a(n) = floor(sqrt(22^n)). - Vincenzo Librandi, Jun 24 2011