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1,4
Table of n, a(n) for n=1..13.
Count prime pairs below 10^n having a difference of 26
a(4)=3 because there are 3 prime gaps of 26 below 10^n
Cf. A007508 A093747 A093749.
Sequence in context: A232069 A172723 A037112 * A156737 A070018 A054682
Adjacent sequences: A093745 A093746 A093747 * A093749 A093750 A093751
nonn,more
Enoch Haga, Apr 15 2004
a(10)-a(13) from Washington Bomfim, Jun 22 2012
approved