A172270 a(n) = floor(n*(sqrt(11)-sqrt(5))).

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77

Offset

0,3

Links

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

Mathematica

With[{c=Sqrt[11]-Sqrt[5]}, Floor[c*Range[0, 80]]] (* Harvey P. Dale, Apr 24 2013 *)

Prog

(Magma) [Floor(n*(Sqrt(11)-Sqrt(5))): n in [0..80]]; // Vincenzo Librandi, Aug 01 2013
(PARI) a(n) = floor(n*(sqrt(11)-sqrt(5))) \\ Charles R Greathouse IV, Jul 01 2016

Crossrefs

Cf. A172264, A172266-A172269, A172272-A172278.

Sequence in context: A085265 A180004 A252474 * A023806 A113763 A322847

Adjacent sequences: A172267 A172268 A172269 * A172271 A172272 A172273

Keyword

nonn,easy

Author

Vincenzo Librandi, Jan 30 2010

Extensions

Checked by Michael B. Porter, Jun 16 2010

Status

approved