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 A062782 #18 Aug 10 2021 12:14:10
%S A062782 1,1,6,13440,81729648000,4963587213865915514880,
%T A062782 7973107998754741458076119859200000000,
%U A062782 738615790595351500616546025309298211371540807680000000000
%N A062782 a(n) = (n^2)! / (n^n).
%H A062782 Seiichi Manyama, <a href="/A062782/b062782.txt">Table of n, a(n) for n = 0..21</a>
%F A062782 a(n) = A088020(n)/A000312(n). - _Seiichi Manyama_, Mar 26 2019
%t A062782 Join[{1},Table[(n^2)!/n^n,{n,8}]] (* _Harvey P. Dale_, Aug 10 2021 *)
%o A062782 (PARI) for(n=0, 8, print1((n^2)!/(n^n), ", "))
%Y A062782 Cf. A000312, A088020.
%K A062782 easy,nonn
%O A062782 0,3
%A A062782 _Jason Earls_, Jul 18 2001
%E A062782 a(0)=1 prepended by _Seiichi Manyama_, Mar 26 2019