A327178 - OEIS

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A327178

Positions of 0's in {A327177(n) : n > 0}.

3, 4, 5, 9, 10, 15, 16, 17, 20, 21, 22, 26, 27, 28, 29, 32, 33, 34, 38, 39, 44, 45, 46, 50, 51, 55, 56, 57, 58, 61, 62, 63, 67, 68, 73, 74, 75, 79, 80, 85, 86, 87, 90, 91, 92, 96, 97, 98, 99, 102, 103, 104, 108, 109, 114, 115, 116, 119, 120, 121, 125

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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 A327177(k) = 0. - Jianing Song, Sep 30 2019

LINKS

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

MATHEMATICA

r = Sqrt[2]; z = 200;

t = Table[Floor[(2 n + 1)*r] - Floor[n*r + r] - Floor[n*r], {n, 1, z}] (* {A327177(n) : n > 0} *)

Flatten[Position[t, 0]] (* A327178 *)

Flatten[Position[t, 1]] (* A327179 *)

CROSSREFS

Cf. A327177, A327179 (complement).

Sequence in context: A279616 A050068 A250444 * A190211 A136120 A217040

Adjacent sequences: A327175 A327176 A327177 * A327179 A327180 A327181

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Aug 25 2019

EXTENSIONS

Corrected by Jianing Song, Sep 30 2019

STATUS

approved