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

0,2

Links

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

Formula

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

Mathematica

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

Prog

(Magma) [Floor(Sqrt(22^n)): n in [0..30]]; // Vincenzo Librandi, Jun 24 2011
(PARI) a(n)=sqrtint(22^n) \\ Charles R Greathouse IV, Nov 18 2011

Crossrefs

Cf. A010478 (sqrt(22)).

Sequence in context: A368289 A254861 A088581 * A220740 A099013 A184510

Adjacent sequences: A017967 A017968 A017969 * A017971 A017972 A017973

Keyword

nonn

Author

N. J. A. Sloane

Status

approved