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 A270045 #18 Mar 10 2016 20:56:09
%S A270045 20,21,22,23,24,25,26,27,28,30,30,32,32,34,34,36,36,38,38,40,40,44,44,
%T A270045 44,44,46,46,50,50,50,50,52,52,56,56,56,56,58,58,62,62,62,62,68,68,68,
%U A270045 68,68,68,70,70,76,76,76,76,76,76,80,80,80,80,82,82,88,88,88,88,88,88,840
%N A270045 Smallest m >= 19 containing no nines when represented in any base from 10 through n.
%C A270045 It remains to be determined if the sequence is finite.
%H A270045 Nathan Fox, <a href="/A270045/b270045.txt">Table of n, a(n) for n = 10..359</a>
%t A270045 Table[SelectFirst[Range[19, 10^3], Total@ Map[Function[k, DigitCount[#, k, 9]], Range[10, n]] == 0 &], {n, 10, 79}] /. n_ /; MissingQ@ n -> Nothing (* _Michael De Vlieger_, Mar 10 2016, Version 10.2 *)
%Y A270045 Cf. A270035, A270037, A270038, A216192, A270039, A270040, A270041, A270042, A270043, A270044.
%K A270045 nonn,base
%O A270045 10,1
%A A270045 _Nathan Fox_, Mar 09 2016