

A327209


Positions of 0's in {A327208(n) : n > 0}.


3



1, 3, 5, 7, 9, 11, 14, 16, 18, 20, 22, 24, 26, 27, 29, 31, 33, 35, 37, 39, 41, 42, 44, 46, 48, 50, 52, 55, 57, 59, 61, 63, 65, 67, 70, 72, 74, 76, 78, 80, 82, 83, 85, 87, 89, 91, 93, 95, 97, 98, 100, 102, 104, 106, 108, 111, 113, 115, 117, 119, 121, 123
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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 A327208(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 + 2)*r]  Floor[n*r + 2 r]  Floor[n*r], {n, 1, z}] (* {A327208(n) : n > 0} *)
Flatten[Position[t, 0]] (* A327209 *)
Flatten[Position[t, 1]] (* A327210 *)


CROSSREFS

Cf. A327208, A327210 (complement).
Sequence in context: A118820 A117521 A190053 * A285590 A195179 A033038
Adjacent sequences: A327206 A327207 A327208 * A327210 A327211 A327212


KEYWORD

nonn,easy


AUTHOR

Clark Kimberling, Aug 26 2019


EXTENSIONS

Corrected by Jianing Song, Sep 30 2019


STATUS

approved



