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A105444 a(n) = the smallest prime p such that p+6 and q+6 are prime; q is the n-th prime after p. 3
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 (list; graph; refs; listen; history; text; internal format)
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: A321689 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

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Last modified July 19 10:45 EDT 2019. Contains 325155 sequences. (Running on oeis4.)