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 A221952 #3 Feb 02 2013 22:33:24 %S A221952 2,4,4,6,8,8,4,8,6,16,4,12,4,8,16,10,4,12,4,24,8,8,4,16,14,8,8,12,4, %T A221952 32,4,12,8,8,16,18,4,8,8,32,4,16,4,12,24,8,4,20,6,28,8,12,4,16,16,16, %U A221952 8,8,4,48,4,8,12,14,16,16,4,12,8,32,4,24,4,8,28,12,8,16,4,40 %N A221952 Number of subgroups of C_5 X C_n. %Y A221952 A row of A216624. %K A221952 nonn %O A221952 1,1 %A A221952 _N. J. A. Sloane_, Feb 02 2013