1,5
Count prime pairs below 10^n having a difference of 50
a(5)=5 because there are 5 prime gaps of 50 below 10^5
Sequence in context: A015002 A059490 A204109 * A142479 A204110 A113056
Adjacent sequences: A093976 A093977 A093978 * A093980 A093981 A093982
nonn
Enoch Haga (Enokh(AT)comcast.net), Apr 24 2004