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 A021200 #12 Jul 08 2025 08:09:09
%S A021200 0,0,5,1,0,2,0,4,0,8,1,6,3,2,6,5,3,0,6,1,2,2,4,4,8,9,7,9,5,9,1,8,3,6,
%T A021200 7,3,4,6,9,3,8,7,7,5,5,1,0,2,0,4,0,8,1,6,3,2,6,5,3,0,6,1,2,2,4,4,8,9,
%U A021200 7,9,5,9,1,8,3,6,7,3,4,6,9,3,8,7,7,5,5,1,0,2,0,4,0,8,1,6,3,2,6
%N A021200 Decimal expansion of 1/196.
%H A021200 <a href="/index/Rec#order_22">Index entries for linear recurrences with constant coefficients</a>, signature (1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,1).
%t A021200 realDigitsRecip[n_]:=With[{rd=RealDigits[1/n,10,120]},Join[PadRight[{},-rd[[2]],0],rd[[1]]]]; realDigitsRecip[196] (* _Harvey P. Dale_, Aug 25 2024 *)
%o A021200 (PARI) 1/196. \\ _Charles R Greathouse IV_, Feb 03 2025
%K A021200 nonn,cons,easy
%O A021200 0,3
%A A021200 _N. J. A. Sloane_