A327217 Positions of 0's in {A327216(n) : n > 0}.

2, 4, 7, 9, 10, 12, 13, 15, 17, 20, 23, 25, 26, 28, 30, 31, 33, 34, 36, 38, 41, 44, 46, 47, 49, 51, 54, 57, 59, 62, 64, 65, 67, 68, 70, 72, 75, 78, 80, 81, 83, 85, 86, 88, 89, 91, 93, 96, 98, 99, 101, 102, 104, 106, 109, 112, 114, 117, 119, 120, 122, 123, 125

Offset

1,1

Comments

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

Positive integers k such that A327216(k) = 0. - Jianing Song, Sep 30 2019

Links

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

Mathematica

r = (1+Sqrt[5])/2; z = 200;
t = Table[Floor[(2 n + 3) r] - Floor[(n*r + 3 r)] - Floor[n*r], {n, 1, z}]  (* {A327216(n) : n > 0} *)
Flatten[Position[t, 0]]  (* A327217 *)
Flatten[Position[t, 1]]  (* A327218 *)

Crossrefs

Cf. A327216, A327218 (complement).

Sequence in context: A199465 A288305 A081249 * A327207 A279934 A047541

Adjacent sequences: A327214 A327215 A327216 * A327218 A327219 A327220

Keyword

nonn,easy

Author

Clark Kimberling, Sep 02 2019

Extensions

Corrected by Jianing Song, Sep 30 2019

Status

approved