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 A291858 #39 Aug 02 2021 10:09:56 %S A291858 3,7,1,8,7,4,2,1,2,7,1,9,5,5,2,2,9,2,5,4,8,9,5,0,2,0,3,3,3,9,2,3,0,8, %T A291858 3,2,4,8,3,6,1,3,0,0,7,8,1,0,7,7,5,1,0,2,8,6,8,8,2,2,4,1,4,0,6,3,0,5, %U A291858 3,5,4,6,8,0,5,1,4,9,0,8,2,9,8,9,9,9,5,1,5,2,1,3,5,4,6,9,6,9,1,3,3,0,1 %N A291858 Decimal expansion of the "Pi OR e" (Piore) constant. %C A291858 Pi_2 = 11.00100100001111110... -> 3.1415926535897... %C A291858 e_2 = 10.10110111111000010... -> 2.7182818284590... %C A291858 Pi_2 OR e_2 = 11.10110111111111110... -> 3.7187421271955... %F A291858 Equals A059742 - A291854 = A291854 + A114916. %e A291858 3.71874212719552292548950203339230832483613007810775102868822414063... %Y A291858 Cf. A000796, A001113, A004593, A004601, A019609, A059742, A114916, A228239, A231325, A292101, A292107, A291854. %K A291858 nonn,cons,base %O A291858 1,1 %A A291858 _Alois P. Heinz_, Sep 13 2017