login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A327254
Positions of 0's in {A327253(n) : n > 0}.
4
1, 3, 5, 7, 9, 10, 12, 14, 16, 18, 21, 23, 25, 27, 29, 30, 32, 34, 36, 38, 41, 43, 45, 47, 49, 50, 52, 54, 56, 58, 61, 63, 65, 67, 69, 70, 72, 74, 76, 78, 81, 83, 85, 87, 89, 90, 92, 94, 96, 98, 99, 101, 103, 105, 107, 110, 112, 114, 116, 118, 119, 121, 123, 125
OFFSET
1,2
COMMENTS
Although a(n)/n->2, the sequence 2n-a(n) appears to be unbounded above.
Positive integers k such that A327253(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[6]; z = 300;
t = Table[Floor[2 n r] - 2 Floor[n*r], {n, 1, z}] (* {A327253(n) : n > 0} *)
Flatten[Position[t, 0]] (* A327254 *)
Flatten[Position[t, 1]] (* A327255 *)
CROSSREFS
Cf. A327253, A327255 (complement).
Sequence in context: A249098 A287774 A308412 * A054684 A294601 A376692
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Sep 03 2019
EXTENSIONS
Corrected by Jianing Song, Sep 30 2019
STATUS
approved