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 A080911 #18 Mar 07 2025 02:55:57
%S A080911 1,2,15,134596,10872202353646160680764975
%N A080911 a(n) = binomial(n!,(n-1)!).
%H A080911 Amiram Eldar, <a href="/A080911/b080911.txt">Table of n, a(n) for n = 1..7</a>
%t A080911 Table[Binomial[n!, (n-1)!], {n, 1, 7}] (* _Vaclav Kotesovec_, Nov 13 2014 *)
%Y A080911 Cf. A000142, A037293, A066526, A058077.
%K A080911 nonn
%O A080911 1,2
%A A080911 _Labos Elemer_, Apr 01 2003