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 A021949 #10 Jul 08 2025 09:09:36
%S A021949 0,0,1,0,5,8,2,0,1,0,5,8,2,0,1,0,5,8,2,0,1,0,5,8,2,0,1,0,5,8,2,0,1,0,
%T A021949 5,8,2,0,1,0,5,8,2,0,1,0,5,8,2,0,1,0,5,8,2,0,1,0,5,8,2,0,1,0,5,8,2,0,
%U A021949 1,0,5,8,2,0,1,0,5,8,2,0,1,0,5,8,2,0,1,0,5,8,2,0,1,0,5,8,2,0,1
%N A021949 Decimal expansion of 1/945.
%H A021949 <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (1, -1, 1, -1, 1).
%t A021949 Join[{0,0},RealDigits[1/945,10,120][[1]]] (* or *) PadRight[{0},120,{2,0,1,0,5,8}] (* _Harvey P. Dale_, May 29 2019 *)
%K A021949 nonn,cons
%O A021949 0,5
%A A021949 _N. J. A. Sloane_