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 A086731 #8 Apr 10 2016 05:17:26
%S A086731 0,5,9,9,9,7,3,4,7,5,5,5,7,7,1,5,4,3,2,8,2,1,4,6,2,4,5,3,6,6,9,5,0,6,
%T A086731 7,3,6,7,8,1,0,7,6,7,3,3,9,4,7,9,6,0,9,1,6,0,6,3,7,3,5,3,7,1,0,2,3,6,
%U A086731 4,7,9,1,3,9,3,8,0,5,5,7,1,6,3,6,4,9,9,4,8,5,1,0,3,1,2,1,7,3,8
%N A086731 Decimal expansion of sum(1/(6*m+5)^2,m=0..infinity).
%D A086731 L. Fejes Toth, Lagerungen in der Ebene, auf der Kugel und im Raum, 2nd. ed., Springer-Verlag, Berlin, Heidelberg 1972; see p. 213.
%e A086731 0.05999734755577...
%t A086731 Join[{0},RealDigits[1/36 PolyGamma[1,5/6],10,120][[1]]] (* _Harvey P. Dale_, Dec 15 2011 *)
%Y A086731 Cf. A086722-A086730.
%K A086731 nonn,cons
%O A086731 0,2
%A A086731 _N. J. A. Sloane_, Jul 31 2003