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 A293489 #12 Oct 11 2017 03:46:54
%S A293489 1,1,1,7,24,180,1200,10080,97440,997920,12096000,149688000,2128896000,
%T A293489 31135104000,515804889600,8717829120000,162151621632000,
%U A293489 3092504583168000,63934815200256000,1366817864315904000,31019500604252160000,733013100880220160000
%N A293489 E.g.f.: Product_{m>0} (1 + x^(2*m-1) + x^(4*m-2)/2! + x^(6*m-3)/3!).
%H A293489 Seiichi Manyama, <a href="/A293489/b293489.txt">Table of n, a(n) for n = 0..446</a>
%o A293489 (PARI) N=66; x='x+O('x^N); Vec(serlaplace(prod(m=1, N, 1+x^(2*m-1)+x^(4*m-2)/2+x^(6*m-3)/6)))
%Y A293489 Column k=3 of A293486.
%Y A293489 Cf. A293463.
%K A293489 nonn
%O A293489 0,4
%A A293489 _Seiichi Manyama_, Oct 10 2017