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%I #11 Aug 14 2018 21:00:07
%S 0,0,0,5,98,1234,13255,129567,1219243,11287965,103578486,946685407,
%T 8643973155,78973715102,722623290887,6625617932534,60889631777778,
%U 560938901663498
%N Number of prime pairs below 10^n having a difference of 28.
%H Siegfried "Zig" Herzog, <a href="http://zigherzog.net/primes/index.html#compare">Frequency of Occurrence of Prime Gaps</a>
%H T. Oliveira e Silva, S. Herzog, and S. Pardi, <a href="http://dx.doi.org/10.1090/S0025-5718-2013-02787-1">Empirical verification of the even Goldbach conjecture and computation of prime gaps up to 4.10^18</a>, Math. Comp., 83 (2014), 2033-2060.
%e a(5) = 98 because there are 98 prime gaps of 28 below 10^5.
%Y Cf. A007508, A093748, A093750.
%K nonn,more
%O 1,4
%A _Enoch Haga_, Apr 15 2004
%E a(10)-a(13) from _Washington Bomfim_, Jun 22 2012
%E a(14)-a(18) from S. Herzog's website added by _Giovanni Resta_, Aug 14 2018