A189215 Zero-one sequence based on the sequence (3n): a(A008585(k))=a(k); a(A001651(k))=1-a(k), a(1)=0, a(2)=1.

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

Offset

1

Links

Table of n, a(n) for n=1..135.

Mathematica

u[n_] := 3n;  (*A008585*)
a[1] = 0; a[2]=1; 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}]; (*A189215*)
Table[a[c[[n]]] = a[n], {n, 1, h}]   (*A189215*)
Flatten[Position[%, 0]]  (*A189287*)
Flatten[Position[%%, 1]] (*A189287*)

Crossrefs

Cf. A188967, A189287, A189288, A189222, A008585.

Sequence in context: A328101 A147850 A286046 * A285128 A080545 A355820

Adjacent sequences: A189212 A189213 A189214 * A189216 A189217 A189218

Keyword

nonn

Author

Clark Kimberling, Apr 19 2011

Status

approved