login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A189206 Zero-one sequence based on the sequence of odd primes:  a(A065091(k))=a(k); a(v(k))=1-a(k), where v=A065090 and a(1)=0, a(2)=0. 4
1, 1, 1, 0, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 1, 0, 0, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1

LINKS

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

MATHEMATICA

u[n_] := Prime[n+1];  (*A065091*)

a[1] = 0; a[2]=0; h = 128;

c = (u[#1] &) /@ Range[2h];

d = (Complement[Range[Max[#1]], #1] &)[c];  (*A065090*)

Table[a[d[[n]]] = 1 - a[n], {n, 1, h - 1}]; (*A189206*)

Table[a[c[[n]]] = a[n], {n, 1, h}]   (*A189206*)

Flatten[Position[%, 0]]  (*A189207*)

Flatten[Position[%%, 1]] (*A189208*)

CROSSREFS

Cf. A188967, A189207, A189208, A189209.

Sequence in context: A265186 A248392 A188318 * A323152 A192280 A266974

Adjacent sequences:  A189203 A189204 A189205 * A189207 A189208 A189209

KEYWORD

nonn

AUTHOR

Clark Kimberling, Apr 18 2011

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 12 19:35 EDT 2020. Contains 335668 sequences. (Running on oeis4.)