A105444 a(n) = the smallest prime p such that p+6 and q+6 are prime; q is the n-th prime after p.

5, 5, 5, 5, 7, 5, 7, 5, 5, 5, 7, 5, 5, 7, 5, 5, 7, 5, 7, 5, 7, 5, 5, 5, 5, 13, 11, 7, 5, 13, 11, 7, 5, 5, 7, 5, 5, 11, 7, 5, 5, 13, 11, 7, 5, 5, 7, 5, 11, 7, 5, 5, 5, 7, 5, 5, 13, 11, 7, 5, 5, 11, 7, 5, 7, 5, 7, 5, 7, 5, 5, 7, 5, 37, 23, 37, 17, 13, 11, 7, 5, 7, 5, 7, 5, 5, 23, 37, 17, 13, 11, 7

Offset

1,1

Links

Table of n, a(n) for n=1..92.

Example

a(2)=5 because 5+6 and 11+6 are primes.

Crossrefs

Cf. A105439, A105443, A105445.

Sequence in context: A368870 A076568 A139259 * A240233 A033299 A293982

Adjacent sequences: A105441 A105442 A105443 * A105445 A105446 A105447

Keyword

nonn

Author

Cino Hilliard, May 02 2005

Extensions

Edited by Don Reble, Jun 11 2007

Status

approved