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 A021239 #11 Jul 08 2025 08:12:17
%S A021239 0,0,4,2,5,5,3,1,9,1,4,8,9,3,6,1,7,0,2,1,2,7,6,5,9,5,7,4,4,6,8,0,8,5,
%T A021239 1,0,6,3,8,2,9,7,8,7,2,3,4,0,4,2,5,5,3,1,9,1,4,8,9,3,6,1,7,0,2,1,2,7,
%U A021239 6,5,9,5,7,4,4,6,8,0,8,5,1,0,6,3,8,2,9,7,8,7,2,3,4,0,4,2,5,5,3
%N A021239 Decimal expansion of 1/235.
%t A021239 Join[{0,0},RealDigits[1/235,10,120][[1]]] (* _Harvey P. Dale_, Apr 02 2011 *)
%t A021239 realDigitsRecip[235] (* The realDigitsRecip program is at A021200 *) (* _Harvey P. Dale_, Aug 28 2024 *)
%K A021239 nonn,cons
%O A021239 0,3
%A A021239 _N. J. A. Sloane_