A327180 a(n) = [(2n+1)r] - [(n+1)r] - [nr], where [ ] = floor and r = sqrt(3).

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

Offset

0

Links

Clark Kimberling, Table of n, a(n) for n = 0..10000

Formula

a(n) = [(2n+1)r] - [(n+1)r] - [nr], where [ ] = floor and r = sqrt(3).

Mathematica

r = Sqrt[3]; z = 200;
t = Table[Floor[(2 n + 1)*r] - Floor[n*r + r] - Floor[n*r], {n, 0, z}]

Crossrefs

The positions of 0's and 1's in {a(n) : n > 0} are given by A327181 and A327182.

Sequence in context: A023532 A226520 A268921 * A030308 A280237 A259044

Adjacent sequences: A327177 A327178 A327179 * A327181 A327182 A327183

Keyword

nonn,easy

Author

Clark Kimberling, Aug 25 2019

Status

approved