1,4

Count prime pairs below 10^n having a difference of 28

a(5)=98 because there are 98 prime gaps of 28 below 10^5

Cf. A007508 A093748 A093750.

Sequence in context: A062538 A053980 A088995 this_sequence A128784 A078534 A141120

Adjacent sequences: A093746 A093747 A093748 this_sequence A093750 A093751 A093752

nonn

Enoch Haga (Enokh(AT)comcast.net), Apr 15 2004