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 A175845 #2 Mar 30 2012 17:26:35 %S A175845 1023456879,1023457689,1023458697,1023465789,1023465879,1023468759, %T A175845 1023476589,1023476859,1023495867,1023546789,1023546987,1023547869, %U A175845 1023548769,1023564879,1023564987,1023568479,1023574689,1023574869 %N A175845 Pandigital numbers (A171102) of the form 9*prime. %C A175845 Or pandigital numbers (A171102) that are 3-almost primes (product of three primes with repetition). %C A175845 There are 160573 such integers. %C A175845 Numbers of integers with first digit n=1..9 are: %C A175845 15996,20815,15331,20042,19959,19723,14819,19422,14466. %Y A175845 Cf. A171102. %K A175845 base,fini,nonn %O A175845 1,1 %A A175845 _Zak Seidov_, Sep 25 2010