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 A021133 #12 Jul 13 2025 15:29:19
%S A021133 0,0,7,7,5,1,9,3,7,9,8,4,4,9,6,1,2,4,0,3,1,0,0,7,7,5,1,9,3,7,9,8,4,4,
%T A021133 9,6,1,2,4,0,3,1,0,0,7,7,5,1,9,3,7,9,8,4,4,9,6,1,2,4,0,3,1,0,0,7,7,5,
%U A021133 1,9,3,7,9,8,4,4,9,6,1,2,4,0,3,1,0,0,7,7,5,1,9,3,7,9,8,4,4,9,6
%N A021133 Decimal expansion of 1/129.
%H A021133 <a href="/index/Rec#order_19">Index entries for linear recurrences with constant coefficients</a>, signature (1,0,-1,1,0,-1,1,0,-1,1,0,-1,1,0,-1,1,0,-1,1).
%t A021133 PadRight[{},120,{0,0,7,7,5,1,9,3,7,9,8,4,4,9,6,1,2,4,0,3,1}] (* _Harvey P. Dale_, Dec 19 2015 *)
%t A021133 realDigitsRecip[129] (* The realDigitsRecip program is at A021200 *) (* _Harvey P. Dale_, Oct 04 2024 *)
%K A021133 nonn,cons
%O A021133 0,3
%A A021133 _N. J. A. Sloane_