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 A210014 #10 Jun 10 2016 00:21:00 %S A210014 4327059168,4613590728,4613590872,7860241359,7860291354,8490536127, %T A210014 8760241359,8760291354 %N A210014 Pandigital numbers (A050278) with each product of four adjacent digits visible as a substring of the digits. %C A210014 Computed by Jean-Marc Falcoz. %H A210014 Eric Angelini, <a href="http://www.cetteadressecomportecinquantesignes.com/DixChiffres.htm">10 different digits, 9 products</a> %H A210014 E. Angelini, <a href="/A198298/a198298.pdf">10 different digits, 9 products</a> [Cached copy, with permission] %e A210014 Example for 4327059168: 4*3*2*7= 168; 5*9*1*6=270; 9*1*6*8=432 are substrings. %Y A210014 A generalization of A198298. Cf. A210013-A210020, A203569, A203566. %K A210014 nonn,base,fini,full %O A210014 1,1 %A A210014 _N. J. A. Sloane_, Mar 16 2012