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 A145754 #2 Mar 30 2012 16:51:01 %S A145754 1,1323,5768,18900,3024,37800,25920,0,40320,9072,0,15120,0,0,24192 %N A145754 a(n) = number of elements of order n in simple group Alt(9) of order 181440. %Y A145754 A row of A057740. Cf. A031963. %K A145754 nonn,fini,full %O A145754 1,2 %A A145754 _N. J. A. Sloane_, Apr 06 2009