1,5
Count prime pairs below 10^n having a difference of 52
a(5)=7 because there are 7 prime gaps of 52 below 10^5
Sequence in context: A107866 A034176 A001765 * A077706 A080492 A082782
Adjacent sequences: A093977 A093978 A093979 * A093981 A093982 A093983
nonn
Enoch Haga (Enokh(AT)comcast.net), Apr 24 2004