A327220 Positions of 0's in {A327219(k) : n > 0}.

1, 2, 5, 6, 9, 10, 13, 14, 18, 19, 22, 23, 26, 27, 30, 31, 34, 35, 36, 39, 40, 43, 44, 47, 48, 52, 53, 56, 57, 60, 61, 64, 65, 68, 69, 70, 73, 74, 77, 78, 81, 82, 85, 86, 89, 90, 91, 94, 95, 98, 99, 102, 103, 107, 108, 111, 112, 115, 116, 119, 120, 123, 124, 125

Offset

1,2

Comments

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

Positive integers k such that A327219(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 + 4) r] - Floor[(n*r + 4 r)] - Floor[n*r], {n, 1, z}]  (* {A327219(n) : n > 0} *)
Flatten[Position[t, 0]]  (* A327220 *)
Flatten[Position[t, 1]]  (* A327221 *)

Crossrefs

Cf. A327219, A327221 (complement).

Sequence in context: A227149 A264120 A042963 * A166097 A285502 A276883

Adjacent sequences: A327217 A327218 A327219 * A327221 A327222 A327223

Keyword

nonn,easy

Author

Clark Kimberling, Sep 02 2019

Extensions

Corrected by Jianing Song, Sep 30 2019

Status

approved