A188076 [nr]-[kr]-[nr-kr], where r=sqrt(3), k=5, [ ]=floor.

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

Offset

1

Comments

See A188014.

Links

Table of n, a(n) for n=1..123.

Formula

a(n)=[nr]-[5r]-[nr-5r], where r=sqrt(3).

Mathematica

r=3^(1/2)); k=5;
t=Table[Floor[n*r]-Floor[(n-k)*r]-Floor[k*r], {n, 1, 220}]   (*A188076*)
Flatten[Position[t, 0]]  (*A188077*)
Flatten[Position[t, 1]]  (*A188078*)

Crossrefs

Cf. A188014, A188077, A188078.

Sequence in context: A191162 A234046 A285565 * A189011 A189135 A369961

Adjacent sequences: A188073 A188074 A188075 * A188077 A188078 A188079

Keyword

nonn

Author

Clark Kimberling, Mar 20 2011

Status

approved