A105445 a(n) = the smallest prime p such that p+8 and q+8 are prime; q is the n-th prime after p.

3, 5, 3, 11, 11, 5, 3, 3, 59, 29, 11, 11, 5, 3, 3, 29, 5, 3, 11, 71, 5, 3, 5, 3, 29, 23, 11, 233, 5, 3, 23, 5, 3, 23, 11, 71, 5, 3, 59, 5, 3, 23, 173, 149, 131, 11, 23, 5, 3, 479, 11, 11, 5, 3, 3, 53, 71, 233, 71, 59, 53, 29, 23, 173, 191, 59, 11, 23, 5, 3, 53, 11, 29, 5, 3

Offset

1,1

Links

Table of n, a(n) for n=1..75.

Example

a(2)=5 because 5+8 and 11+8 are primes.

Crossrefs

Cf. A105439, A105443, A105444.

Sequence in context: A309392 A089730 A351368 * A345014 A328878 A178095

Adjacent sequences: A105442 A105443 A105444 * A105446 A105447 A105448

Keyword

nonn

Author

Cino Hilliard, May 02 2005

Extensions

Edited by Don Reble, Jun 11 2007

Status

approved