A189222 Zero-one sequence based on the sequence (3n): a(A008585(k))=a(k); a(A001651(k))=1-a(k), a(1)=0, a(2)=0.

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

Offset

1

Links

Ivan Neretin, Table of n, a(n) for n = 1..10000

Mathematica

u[n_] := 3n;  (*A008585*)
a[1] = 0; a[2]=0; h = 128;
c = (u[#1] &) /@ Range[2h];
d = (Complement[Range[Max[#1]], #1] &)[c]; (*A001651*)
Table[a[d[[n]]] = 1 - a[n], {n, 1, h - 1}]; (*A189222*)
Table[a[c[[n]]] = a[n], {n, 1, h}]   (*A189222*)
Flatten[Position[%, 0]]  (*A189223*)
Flatten[Position[%%, 1]] (*A189224*)

Crossrefs

Cf. A188967, A189223, A189224.

Sequence in context: A085357 A011748 A145361 * A229062 A130304 A267533

Adjacent sequences: A189219 A189220 A189221 * A189223 A189224 A189225

Keyword

nonn

Author

Clark Kimberling, Apr 18 2011

Status

approved