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 A141405 #2 Mar 31 2012 10:26:07 %S A141405 2,23,101,1423,10243,102043,1234657,10243567,100234657,1123465789, %T A141405 10123457689,100123456789,1001233458679,10011223456879, %U A141405 100122334546789,1001122334546879 %N A141405 Smallest n-digit prime using the most distinct and consecutive digits. %e A141405 a(10)=1123465789 and not 1002430567 because although the latter prime is smaller it does not have the most distinct digits. Similarly,a(13)= 1001233458679 and not 1001123456897. Note that for n >=11,all digits 0 through 9 are used. %Y A141405 Cf. A007809 [From _Lekraj Beedassy_, Sep 14 2008] %K A141405 more,nonn,base %O A141405 1,1 %A A141405 _Lekraj Beedassy_, Aug 03 2008, Aug 09 2008