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 A021139 #19 Jul 08 2025 08:04:11
%S A021139 0,0,7,4,0,7,4,0,7,4,0,7,4,0,7,4,0,7,4,0,7,4,0,7,4,0,7,4,0,7,4,0,7,4,
%T A021139 0,7,4,0,7,4,0,7,4,0,7,4,0,7,4,0,7,4,0,7,4,0,7,4,0,7,4,0,7,4,0,7,4,0,
%U A021139 7,4,0,7,4,0,7,4,0,7,4,0,7,4,0,7,4,0,7,4,0,7,4,0,7,4,0,7,4,0,7
%N A021139 Decimal expansion of 1/135.
%H A021139 <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (0, 0, 1).
%t A021139 PadLeft[First@ #, Abs@ Last@ # + Length@ First@ #] &@ RealDigits[N[1/135, 120]] (* _Bruno Berselli_, Jun 21 2016 *)
%t A021139 Join[{0,0},RealDigits[1/135,10,120][[1]]] (* or *) PadRight[{0},120,{4,0,7}] (* _Harvey P. Dale_, Jun 16 2023 *)
%K A021139 nonn,cons,easy
%O A021139 0,3
%A A021139 _N. J. A. Sloane_