

A327182


Positions of 1's in {A327180(n) : n > 0}.


3



1, 3, 4, 5, 8, 12, 14, 15, 16, 18, 19, 20, 23, 27, 29, 30, 31, 33, 34, 38, 42, 44, 45, 46, 48, 49, 53, 55, 56, 57, 59, 60, 61, 64, 68, 70, 71, 72, 74, 75, 76, 79, 83, 85, 86, 87, 89, 90, 94, 98, 100, 101, 102, 105, 109, 111, 112, 113, 115, 116, 117, 120, 124
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OFFSET

1,2


COMMENTS

Although a(n)/n>2, the sequence 2*na(n) appears to be unbounded below and above.
Positive integers k such that A327180(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[3]; z = 200;
t = Table[Floor[(2 n + 1)*r]  Floor[n*r + r]  Floor[n*r], {n, 1, z}] (* {A327180(n) : n > 0} *)
Flatten[Position[t, 0]] (* A327181 *)
Flatten[Position[t, 1]] (* A327182 *)


CROSSREFS

Cf. A327180, A327181 (complement).
Sequence in context: A035113 A106263 A089642 * A030403 A034403 A215082
Adjacent sequences: A327179 A327180 A327181 * A327183 A327184 A327185


KEYWORD

nonn,easy


AUTHOR

Clark Kimberling, Aug 25 2019


EXTENSIONS

Corrected by Jianing Song, Sep 30 2019


STATUS

approved



