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 A248895 #13 Dec 16 2015 11:00:11
%S A248895 0,3,7,3,6,2,2,9,3,6,9,8,9,3,6,3,1,4,7,4,2,1,3,3,2,3,4,3,8,0,8,0,5,4,
%T A248895 1,5,5,3,2,1,7,0,3,4,0,2,8,5,5,8,7,9,3,9,3,8,6,8,7,4,2,4,7,9,8,9,6,8,
%U A248895 5,3,9,8,9,4,9,0,9,9,7,5,4,2,3,4,2,9,1
%N A248895 Decimal expansion of Sum_{i >= 1} 1/(4*i^2-1)^3.
%H A248895 Xavier Gourdon and Pascal Sebah, <a href="http://numbers.computation.free.fr/Constants/Pi/piSeries.html">Collection of series for Pi</a> (see paragraph 7).
%F A248895 Equals 1/2 - 3*(Pi/8)^2.
%e A248895 0.0373622936989363147421332343808054155321703402855879393868742479896853989...
%t A248895 Join[{0}, RealDigits[1/2 - 3 (Pi/8)^2, 10, 100][[1]]]
%Y A248895 Cf. A123092: Sum_{i >= 1} 1/(4*i^2-1)^2.
%Y A248895 Cf. A248896: Sum_{i >= 1} 1/(4*i^2-1)^4.
%K A248895 nonn,cons
%O A248895 0,2
%A A248895 _Bruno Berselli_, Mar 06 2015