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 A140764 #5 Mar 31 2012 10:26:07 %S A140764 1,37,613,519018 %N A140764 Numbers equal to the sum of the squares of their duodecimal digit factorials. %C A140764 In other words, numbers equal to the sum of the squares of factorials of their base-12 representation digits. %D A140764 J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 37, pp 15, Ellipses, Paris 2008. %e A140764 We have, for instance, 37 = 31_(12) = (3!)^2 + (1!)^2 and 613 = 431_(12) = (4!)^2 + (3!)^2 + (1!)^2. %Y A140764 Cf. A014080. %K A140764 fini,full,nonn,base %O A140764 1,2 %A A140764 _Lekraj Beedassy_, Jul 13 2008