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A195129
a(n) = 2*n - floor(n*sqrt(1/3)).
2
0, 2, 3, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 19, 20, 22, 23, 25, 26, 28, 29, 30, 32, 33, 35, 36, 37, 39, 40, 42, 43, 45, 46, 47, 49, 50, 52, 53, 55, 56, 57, 59, 60, 62, 63, 65, 66, 67, 69, 70, 72, 73, 74, 76, 77, 79, 80, 82, 83, 84, 86, 87, 89, 90, 92, 93, 94, 96, 97, 99
OFFSET
0,2
LINKS
PROG
(Magma) [2*n-Floor(n*(Sqrt(1/3))): n in [0..70]]; // Vincenzo Librandi, Sep 12 2011
CROSSREFS
Sequence in context: A087057 A184580 A184622 * A167389 A288373 A087067
KEYWORD
nonn
AUTHOR
Clark Kimberling, Sep 09 2011
STATUS
approved