

A327223


Positions of 0's in {A327222(k) : n > 0}.


3



1, 4, 5, 6, 10, 11, 13, 16, 17, 18, 22, 23, 25, 28, 29, 30, 33, 34, 35, 39, 40, 42, 45, 46, 47, 51, 52, 54, 57, 58, 59, 63, 64, 68, 69, 71, 74, 75, 76, 80, 81, 83, 86, 87, 88, 92, 93, 95, 98, 99, 100, 103, 104, 105, 109, 110, 112, 115, 116, 117, 121, 122, 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 A327222(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 = 300;
t = Table[Floor[(2 n + 4) r]  Floor[(n*r + 4 r)]  Floor[n*r], {n, 1, z}] (* {A327222(n) : n > 0} *)
Flatten[Position[t, 0]] (* A327223 *)
Flatten[Position[t, 1]] (* A327224 *)


CROSSREFS

Cf. A327222, A327224.
Sequence in context: A070751 A047258 A024565 * A143833 A186808 A114439
Adjacent sequences: A327220 A327221 A327222 * A327224 A327225 A327226


KEYWORD

nonn,easy


AUTHOR

Clark Kimberling, Sep 02 2019


EXTENSIONS

Corrected by Jianing Song, Sep 30 2019


STATUS

approved



