%I
%S 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,
%T 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,
%U 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
%N Number of different pairs of primes p,q such that : p<q, p is a cousin prime of p4 or p+4 and q is a cousin prime of q4 or q+4, 2*n=p+q
%C conjecture : for n>5573 there is at least one such pair of primes p+q=2*n
%H Pierre CAMI, <a href="/A159704/b159704.txt">Table of n, a(n) for n=1..50000</a>
%e 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
%K nonn
%O 1,12
%A _Pierre CAMI_, Apr 20 2009
