This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A331370 #21 Sep 19 2021 22:00:33
%S A331370 1,8,7,2,1,7,8,8
%N A331370 Decimal expansion of Sum_{(p1, p2) is twin prime pair} log(p2 / p1).
%C A331370 This constant is the difference between Brun's constant and the A331369 constant.
%C A331370 This sum converges because log(p_(k+1)/p_k) < 1/p_k + 1/p_(k+1) for every k >= 1 and (p_k, p_(k+1)) twin prime pair.
%F A331370 Equals A065421 - A331369.
%e A331370 1.8721788...
%Y A331370 Cf. A077800, A065421, A331369, A001359, A006512.
%K A331370 nonn,cons,more
%O A331370 1,2
%A A331370 _Dimitris Valianatos_, May 03 2020