A172266 a(n) = floor(n*(sqrt(5)-sqrt(2))).

0, 0, 1, 2, 3, 4, 4, 5, 6, 7, 8, 9, 9, 10, 11, 12, 13, 13, 14, 15, 16, 17, 18, 18, 19, 20, 21, 22, 23, 23, 24, 25, 26, 27, 27, 28, 29, 30, 31, 32, 32, 33, 34, 35, 36, 36, 37, 38, 39, 40, 41, 41, 42, 43, 44, 45, 46, 46, 47, 48, 49, 50, 50, 51, 52, 53, 54, 55, 55, 56, 57, 58, 59, 59

Offset

0,4

Links

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

Mathematica

With[{c = Sqrt[5] - Sqrt[2]}, Floor[c Range[0, 80]]] (* Vincenzo Librandi, Aug 01 2013 *)

Prog

(Magma) [Floor(n*(Sqrt(5)-Sqrt(2))): n in [0..80]]; // Vincenzo Librandi, Aug 01 2013
(PARI) a(n)=(sqrt(5)-sqrt(2))*n\1 \\ Charles R Greathouse IV, Sep 02 2015

Crossrefs

Cf. A172264, A172267-A172270, A172272-A172278.

Sequence in context: A109401 A307294 A280471 * A362949 A056847 A268234

Adjacent sequences: A172263 A172264 A172265 * A172267 A172268 A172269

Keyword

nonn,easy

Author

Vincenzo Librandi, Jan 30 2010

Status

approved