A327254 Positions of 0's in {A327253(n) : n > 0}.

1, 3, 5, 7, 9, 10, 12, 14, 16, 18, 21, 23, 25, 27, 29, 30, 32, 34, 36, 38, 41, 43, 45, 47, 49, 50, 52, 54, 56, 58, 61, 63, 65, 67, 69, 70, 72, 74, 76, 78, 81, 83, 85, 87, 89, 90, 92, 94, 96, 98, 99, 101, 103, 105, 107, 110, 112, 114, 116, 118, 119, 121, 123, 125

Offset: 1

Author

Clark Kimberling, Sep 03 2019

Keywords

• nonn
• easy

Comments

Although a(n)/n->2, the sequence 2n-a(n) appears to be unbounded above.

Positive integers k such that A327253(k) = 0. - Jianing Song, Sep 30 2019

Links

• Clark Kimberling and Jianing Song, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A327253, A327255 (complement).

Programs

Mathematica

r = Sqrt[6]; z = 300;
t = Table[Floor[2 n r] - 2 Floor[n*r], {n, 1, z}]  (* {A327253(n) : n > 0} *)
Flatten[Position[t, 0]]  (* A327254 *)
Flatten[Position[t, 1]]  (* A327255 *)

Extensions

Corrected by Jianing Song, Sep 30 2019