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 A204096 #10 Mar 30 2012 18:39:53
%S A204096 13047685942,14057869523,20476859413,21304768594,35078196492,
%T A204096 35079219648,35079648192,35079649218,35081964792,35092196478,
%U A204096 35096478192,35096479218,35180796492,35180964792,35192079648,35192096478,35196478092,35196479208
%N A204096 Numbers that are 5-persistent but not 6-persistent.
%C A204096 A number n is k-persistent iff all of {n, 2n,..., kn} are pandigital (in the sense of A171102).
%D A204096 Ross Honsberger, More Mathematical Morsels, Mathematical Association of America, 1991, pages 15-18.
%H A204096 Hans Havermann, <a href="/A204096/b204096.txt">Table of n, a(n) for n = 1..1000</a>
%Y A204096 Cf. A171102 (pandigital), A051264 (1-persistent), A051018 (2-persistent), A051019 (3-persistent), A051020 (4-persistent), A204097 (6-persistent), A204047 (smallest n-persistent).
%K A204096 nonn,base
%O A204096 1,1
%A A204096 _Hans Havermann_, Jan 10 2012