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 A086727 #5 Mar 30 2012 16:49:46 %S A086727 1,0,3,6,6,2,5,3,6,3,6,7,6,3,7,9,4,1,4,3,6,6,1,3,0,5,3,2,3,9,7,0,6,6, %T A086727 1,1,9,1,3,4,5,2,5,5,9,4,0,7,6,4,0,2,8,6,6,8,8,3,9,9,8,6,1,5,8,1,0,9, %U A086727 7,3,5,2,2,2,0,8,3,2,8,3,4,4,2,5,2,5,8,6,4,4,8,6,4,3,3,8,4,0,6 %N A086727 Decimal expansion of sum(1/(6*m+1)^2,m=0..infinity). %D A086727 L. Fejes Toth, Lagerungen in der Ebene, auf der Kugel und im Raum, 2nd. ed., Springer-Verlag, Berlin, Heidelberg 1972; see p. 213. %e A086727 1.0366253636763794... %t A086727 RealDigits[N[PolyGamma[1, 1/6]/36, 100]][[1]] %Y A086727 Cf. A086722-A086731. %K A086727 nonn,cons %O A086727 1,3 %A A086727 _N. J. A. Sloane_, Jul 31 2003