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A159704
Number of different pairs of primes p,q such that : p<q, p is a cousin prime of p-4 or p+4 and q is a cousin prime of q-4 or q+4, 2*n=p+q
3
0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 2, 1, 1, 2, 1, 1, 2, 0, 1, 0, 1, 0, 2, 2, 1, 4, 2, 2, 4, 1, 2, 2, 0, 1, 0, 1, 0, 2, 2, 1, 4, 2, 2, 4, 1, 2, 2, 1, 1, 2, 2, 1, 4, 3, 2, 6, 4, 3, 8, 3, 4, 6, 1, 3, 2, 2, 1, 4, 3, 2, 6, 4, 3, 8, 1, 4, 2, 0, 1, 0, 2, 0, 4, 3, 2, 6, 3, 3, 6, 2, 3, 4, 1, 2, 2, 1, 1, 2, 3, 1, 6, 4, 3, 8
OFFSET
1,12
COMMENTS
conjecture : for n>5573 there is at least one such pair of primes p+q=2*n
LINKS
EXAMPLE
11+13=24,7+17=24 so for n=12 2 pairs p,q such that p+q=2*12, p<q p and q have a cousin prime
CROSSREFS
Sequence in context: A027199 A140218 A193805 * A348194 A101428 A360171
KEYWORD
nonn
AUTHOR
Pierre CAMI, Apr 20 2009
STATUS
approved