A195127 a(n) = 2*n - floor(n*r/5), where r = (1 + sqrt(5))/2.

0, 2, 4, 6, 7, 9, 11, 12, 14, 16, 17, 19, 21, 22, 24, 26, 27, 29, 31, 32, 34, 36, 37, 39, 41, 42, 44, 46, 47, 49, 51, 52, 54, 56, 57, 59, 61, 63, 64, 66, 68, 69, 71, 73, 74, 76, 78, 79, 81, 83, 84, 86, 88, 89, 91, 93, 94, 96, 98, 99, 101, 103, 104, 106, 108, 109

Offset

0,2

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..10000

Mathematica

Table[2 n - Floor[n (1 + Sqrt[5])/10], {n, 0, 80}] (* Wesley Ivan Hurt, Jun 26 2022 *)

Prog

(Magma) [2*n-Floor(n*(1+Sqrt(5))/10): n in [0..70]]; // Vincenzo Librandi, Sep 11 2011

Crossrefs

Sequence in context: A184732 A039009 A032793 * A292654 A083088 A080755

Adjacent sequences: A195124 A195125 A195126 * A195128 A195129 A195130

Keyword

nonn

Author

Clark Kimberling, Sep 09 2011

Extensions

Offset changed from 1 to 0 by Vincenzo Librandi, Sep 11 2011

Status

approved