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 A195338 #8 Oct 02 2012 03:25:19
%S A195338 1,2,6,12,180,360,7560,15120,226800,453600,14968800,29937600,
%T A195338 40864824000,81729648000
%N A195338 a(n) = A091137(n) / A016116(n).
%t A195338 a[n_] := (For[primePi = 1; p = 2; m = 1, p <= n + 1, primePi++, p = Prime[primePi]; m = m*p^Quotient[n, p - 1]]; m/2^Floor[n/2]); Table[a[n], {n, 0, 13}] (* _Jean-François Alcover_, Oct 02 2012 *)
%K A195338 nonn
%O A195338 0,2
%A A195338 _Paul Curtz_, Sep 16 2011