A129192 Least J such that J*p(n+1)#-K*p(n)#-1 and J*p(n+1)#-K*p(n)#+1 are twin primes for some K>0 and K<p(n+1) with p(n)=n-th prime and p(n)#=product of the first n primes = primorial(n).

1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 4, 1, 2, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 2, 1, 1, 3, 1, 2, 1, 2, 2, 1, 7, 4, 1, 2, 2, 3, 2, 1, 6, 4, 5, 1, 2, 1, 1, 3, 7, 1, 3, 1, 1, 1, 3, 1, 5, 3, 4, 1, 5, 9, 3, 2, 2, 2, 2, 8, 1, 8, 2, 3, 11, 4, 2, 1, 2, 1, 15, 2, 10, 7, 5, 5, 2, 2, 3, 2, 2, 1, 4, 6, 4, 1, 1

Offset

1,13

Comments

Least K values for least J are given in A129193

Links

Table of n, a(n) for n=1..104.

Crossrefs

Cf. A129193.

Sequence in context: A132068 A173441 A326851 * A062540 A173636 A115878

Adjacent sequences: A129189 A129190 A129191 * A129193 A129194 A129195

Keyword

nonn

Author

Pierre CAMI, Apr 02 2007

Status

approved