A187967 [nr+kr]-[nr]-[kr], where r=sqrt(2), k=2, [ ]=floor.

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

Offset

1

Comments

See A187950.

Links

Table of n, a(n) for n=1..128.

Mathematica

r=2^(1/2); k=2
seqA=Table[Floor[(n+2)r]-Floor[n*r]-Floor[k*r], {n, 1, 220}]   (* A187967 *)
Flatten[Position[seqA, 0] ]   (* A098021 conjectured *)
Flatten[Position[seqA, 1] ]   (* A187968 *)

Crossrefs

Cf. A187950, A098021, A187968.

Sequence in context: A132342 A156174 A358847 * A106467 A106468 A030317

Adjacent sequences: A187964 A187965 A187966 * A187968 A187969 A187970

Keyword

nonn

Author

Clark Kimberling, Mar 17 2011

Status

approved