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 A372716 #6 May 21 2024 10:20:18 %S A372716 1,2,84,8520,1681680,547011360,265419443520,179736434317440, %T A372716 161969818051641600,187420440830701478400,270844381564455655756800, %U A372716 478068612103265576314521600,1012116454555692487808449843200,2531390694197068730346648007680000 %N A372716 a(n) = A372723(2*n, n). %Y A372716 Cf. A372723. %K A372716 nonn %O A372716 0,2 %A A372716 _Peter Luschny_, May 21 2024