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 A021923 #15 Sep 09 2018 04:17:43
%S A021923 0,0,1,0,8,8,1,3,9,2,8,1,8,2,8,0,7,3,9,9,3,4,7,1,1,6,4,3,0,9,0,3,1,5,
%T A021923 5,6,0,3,9,1,7,3,0,1,4,1,4,5,8,1,0,6,6,3,7,6,4,9,6,1,9,1,5,1,2,5,1,3,
%U A021923 6,0,1,7,4,1,0,2,2,8,5,0,9,2,4,9,1,8,3,8,9,5,5,3,8,6,2,8,9,4,4
%N A021923 Decimal expansion of 1/919.
%t A021923 Join[{0,0},RealDigits[1/919,10,120][[1]]] (* _Harvey P. Dale_, Feb 13 2014 *)
%o A021923 (Maxima) fpprec : 100$ ev(bfloat(1/919)); /* _Martin Ettl_, Oct 17 2012 */
%o A021923 (PARI) 1/919. \\ _Altug Alkan_, Sep 08 2018
%K A021923 nonn,cons
%O A021923 0,5
%A A021923 _N. J. A. Sloane_