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 A064030 #6 Jul 16 2019 06:15:29
%S A064030 1,2,36,576,207360000,268738560000,416336312719673760153600000000,
%T A064030 6984964247141514123629140377600000000,
%U A064030 300679807141675805997423113304381849600000000
%N A064030 Product of unitary divisors of n!.
%H A064030 Amiram Eldar, <a href="/A064030/b064030.txt">Table of n, a(n) for n = 1..17</a>
%F A064030 a(n)=(n!)^(A034444(n!)/2)
%e A064030 n = 6 has 8 unitary divisors:{16,45,9,80,5,144,1,720}, a(6) = 720^4 = 268738560000
%t A064030 a[n_] := (n!)^(2^(PrimePi[n]-1)); Array[a, 10] (* _Amiram Eldar_, Jul 16 2019 *)
%Y A064030 Cf. A048656, A048657, A061537, A061538, A000142.
%K A064030 nonn
%O A064030 1,2
%A A064030 _Labos Elemer_, Sep 13 2001