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A087419 Consider pairs (p,k) such that p is a prime, q and r are the two primes following p, 0<k<q and k*primorial(p)+q and k*primorial(p)+r are consecutive primes; sequence gives values of k. 1

%I #5 Oct 19 2017 03:14:22

%S 1,1,2,4,1,2,3,4,2,3,5,7,10,6,7,12,8,10,9,16,23,8,13,30,40,13,20,25,

%T 27,33,27,29,20,8,29,66,37,52,8,44,71,99,47,79,59,105,104,60,106,12,

%U 13,50,121,173,167,3,49,34,7,42,42,182,107,53,157,197,314,8,335,211,273,229

%N Consider pairs (p,k) such that p is a prime, q and r are the two primes following p, 0<k<q and k*primorial(p)+q and k*primorial(p)+r are consecutive primes; sequence gives values of k.

%e a(8)=4 because A087418(8)=5; 4*(2*3*5)+7 and 4*(2*3*5)+11 are consecutive primes.

%Y Cf. A002110, A087418.

%K nonn

%O 1,3

%A _Pierre CAMI_, Oct 22 2003

%E Edited by _Don Reble_, Nov 09 2005

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Last modified March 28 16:00 EDT 2024. Contains 371254 sequences. (Running on oeis4.)