A172276 a(n) = floor(n*(sqrt(13)-sqrt(5))).

0, 1, 2, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 17, 19, 20, 21, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36, 38, 39, 41, 42, 43, 45, 46, 47, 49, 50, 52, 53, 54, 56, 57, 58, 60, 61, 62, 64, 65, 67, 68, 69, 71, 72, 73, 75, 76, 78, 79, 80, 82, 83, 84, 86, 87, 89, 90, 91, 93, 94, 95, 97

Offset: 0

Author

Vincenzo Librandi, Jan 30 2010

Keywords

• nonn
• easy

Links

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

Crossrefs

Cf. A172264, A172266-A172270, A172272-A172278.

Programs

Magma

[Floor(n*(Sqrt(13)-Sqrt(5))): n in [0..80]]; // Vincenzo Librandi, Aug 01 2013

Mathematica

With[{c = Sqrt[13] - Sqrt[5]}, Floor[c Range[0, 80]]] (* Vincenzo Librandi, Aug 01 2013 *)