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 A104786 #6 Mar 31 2012 10:26:04 %S A104786 0,22,0,0,0,0,0,10213223,0,1031223314,0,0,0,10413223241516,0, %T A104786 1051322314251617,0,106132231415261718,1011112131415161718, %U A104786 10713223141516271819,101112213141516171819 %N A104786 a(n) = least member of A047841 with n digits, or 0 if no such number exists. %Y A104786 Cf. A047841, A104785, A104787, A039616, A039617. %K A104786 fini,full,nonn,base %O A104786 1,2 %A A104786 _Lekraj Beedassy_, Mar 25 2005 %E A104786 Edited by _David Wasserman_, Apr 17 2008