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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

%I #5 Oct 19 2017 03:14:40

%S 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,

%T 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,

%U 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

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

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

%Y Cf. A105439, A105443, A105445.

%K nonn

%O 1,1

%A _Cino Hilliard_, May 02 2005

%E Edited by _Don Reble_, Jun 11 2007

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Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)