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 A061861 #7 Dec 07 2019 08:18:53
%S A061861 10,50,33,25,20,16,14,12,11,10,90,83,76,71,66,62,58,55,52,50,47,45,43,
%T A061861 41,40,38,37,35,34,33,32,31,30,29,28,27,27,26,25,25,24,23,23,22,22,21,
%U A061861 21,20,20,20,19,19,18,18,18,17,17,17,16,16,16,16,15,15,15,15,14,14,14
%N A061861 First two significant digits of 1/n written in decimal.
%C A061861 After 10^k terms the number of times m will have appeared will be about 10^(k+2)/(9*m*(m+1)); e.g., 10 will appear just over 10.1% of the time.
%F A061861 a(n) = floor(10^floor(2+log_10(n-1))/n).
%e A061861 a(32)=31 since 1/32 = 0.0312500000...
%t A061861 Table[FromDigits[RealDigits[1/n,10,2][[1]]],{n,70}] (* _Harvey P. Dale_, Jan 19 2018 *)
%Y A061861 Cf. A033420, A033421, A052038.
%K A061861 base,nonn
%O A061861 1,1
%A A061861 _Henry Bottomley_, May 11 2001