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 A263492 #11 Apr 10 2016 10:22:02 %S A263492 1,0,5,3,3,7,9,5,9,6,4,1,4,7,6,0,0,7,6,0,3,4,8,9,2,9,4,3,9,1,6,3,7,7, %T A263492 1,5,2,2,3,7,4,3,4,1,5,9,8,5,4,5,3,1,6,8,8,0,8,2,6,8,7,3,0,1,4,5,4,2, %U A263492 6,7,4,6,7,2,2,2,0,2,5,0,1,7,9,5,1,4,9,0,9,3,1,5,0,1,8 %N A263492 Decimal expansion of the generalized hypergeometric function 3F2(1/2,1/2,3/2 ; 1,2 ; x) at x=1/4. %C A263492 Multiplication with Pi^2/16 gives 0.64977.. = integral_{x=0..infinity} I_1(x)*K_0(x)*K_1(x) dx, where I and K are Modified Bessel Functions. [corrected by _Vaclav Kotesovec_, Apr 10 2016] %e A263492 1.05337959641476007603489294... %t A263492 RealDigits[HypergeometricPFQ[{1/2, 1/2, 3/2}, {1, 2}, 1/4], 10, 120][[1]] (* _Vaclav Kotesovec_, Apr 10 2016 *) %t A263492 RealDigits[Integrate[16*BesselI[1, x]*BesselK[0, x]*BesselK[1, x]/Pi^2 , {x, 0, Infinity}], 10, 120][[1]] (* _Vaclav Kotesovec_, Apr 10 2016 *) %K A263492 cons,nonn %O A263492 1,3 %A A263492 _R. J. Mathar_, Oct 19 2015