A072626 Parity of floor(n/log(n)).

0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0

Offset

2,1

Links

Amiram Eldar, Table of n, a(n) for n = 2..10000

Formula

a(n) = floor(n / log(n)) mod 2.

a(n) = A000035(A050500(n)). - Amiram Eldar, Mar 17 2025

Mathematica

a[n_] := Mod[Floor[n / Log[n]], 2]; Array[a, 100, 2] (* Amiram Eldar, Mar 17 2025 *)

Crossrefs

Cf. A000035, A000720, A050500, A071986.

Sequence in context: A316824 A118953 A023970 * A191153 A011659 A136036

Adjacent sequences: A072623 A072624 A072625 * A072627 A072628 A072629

Keyword

nonn

Author

Labos Elemer, Jun 28 2002

Extensions

Offset corrected by Sean A. Irvine, Oct 15 2024

Status

approved