A188083 [nr+kr]-[nr]-[kr], where r=sqrt(3), k=2, [ ]=floor.

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

Offset

1

Comments

See A187950.

Links

Table of n, a(n) for n=1..136.

Formula

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

Mathematica

r=3^(1/2); k=2;
seqA=Table[Floor[n*r+k*r]-Floor[n*r]-Floor[k*r], {n, 1, 220}]   (* A188083 *)
Flatten[Position[seqA, 0] ]   (* A188084 *)
Flatten[Position[seqA, 1] ]   (* A188085 *)

Crossrefs

Cf. A187950, A188084, A188085.

Sequence in context: A287772 A190198 A071004 * A102560 A190669 A355328

Adjacent sequences: A188080 A188081 A188082 * A188084 A188085 A188086

Keyword

nonn

Author

Clark Kimberling, Mar 20 2011

Status

approved