A163466 A permutation of two copies of the prime sequence, one moved to nonprime indices, the other to prime indices.

2, 3, 2, 3, 5, 5, 7, 7, 11, 13, 17, 11, 19, 13, 23, 29, 31, 17, 37, 19, 41, 43, 47, 23, 53, 59, 61, 67, 71, 29, 73, 31, 79, 83, 89, 97, 101, 37, 103, 107, 109, 41, 113, 43, 127, 131, 137, 47, 139, 149, 151, 157, 163, 53, 167, 173, 179, 181, 191, 59, 193, 61, 197, 199, 211, 223

Offset

0,1

Comments

The positions 0,1,2,3,.. in this sequence here are classified as either prime (P) or nonprime (N),

either in A000040 or in A141468, which yields a pattern N,N,P,P,N,P,N,P,N,N,N,P,..

One copy of the prime sequence is filled in at the positions marked as N, a second copy is filled in at the positions marked as P.

Links

Table of n, a(n) for n=0..65.

Crossrefs

Cf. A000040, A001477, A141468.

Sequence in context: A059036 A184442 A295609 * A306733 A085207 A179969

Adjacent sequences: A163463 A163464 A163465 * A163467 A163468 A163469

Keyword

nonn,easy

Author

Juri-Stepan Gerasimov, Jul 28 2009

Extensions

Definition clarified, offset set to 0, 89 inserted by R. J. Mathar, Aug 02 2009

Status

approved