A017913 Powers of sqrt(3) rounded down.

1, 1, 3, 5, 9, 15, 27, 46, 81, 140, 243, 420, 729, 1262, 2187, 3787, 6561, 11363, 19683, 34091, 59049, 102275, 177147, 306827, 531441, 920482, 1594323, 2761448, 4782969, 8284345, 14348907, 24853035, 43046721

Offset

0,3

Links

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

Mathematica

Floor[(Sqrt[3])^Range[0, 40]] (* Vincenzo Librandi, Nov 20 2011 *)

Prog

(PARI) a(n)=sqrtint(3^n) \\ Charles R Greathouse IV, Nov 18 2011
(Magma) [Floor(Sqrt(3^n)): n in [0..40]]; // Vincenzo Librandi, Nov 20 2011

Crossrefs

Sequence in context: A083658 A018436 A018298 * A390318 A307677 A140428

Adjacent sequences: A017910 A017911 A017912 * A017914 A017915 A017916

Keyword

nonn

Author

N. J. A. Sloane

Status

approved