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 A103984 #13 Aug 23 2025 09:50:09 %S A103984 8,7,8,5,3,0,9,1,5,2,6,7,4,8,0,2,7,7,1,7,8,9,1,6,7,9,6,3,3,6,2,2,4,7, %T A103984 4,9,5,1,1,8,9,6,9,9,1,0,8,9,7,6,8,3,2,5,1,3,7,6,1,6,2,9,0,9,6,1,1,9, %U A103984 0,3,7,9,9,3,2,7,9,4,9,9,7,2,5,4,3,4,6,3,4,9,4,8,4,2,9,7,0,1,1,0,9,9 %N A103984 Decimal expansion of average length of a line segment picked at random in a unit 5-cube. %D A103984 Steven R. Finch, Mathematical Constants, Encyclopedia of Mathematics and its Applications, vol. 94, Cambridge University Press, 2003, Section 8.1, p. 480. %H A103984 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/HypercubeLinePicking.html">Hypercube Line Picking</a>. %e A103984 0.878530915... %Y A103984 Cf. A103983, A103985, A103986, A103987. %K A103984 nonn,cons %O A103984 0,1 %A A103984 _Eric W. Weisstein_, Feb 24 2005 %E A103984 Offset corrected by _Vaclav Kotesovec_, Aug 23 2025