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 A071551 #15 Sep 08 2022 08:45:06
%S A071551 1,362880,12504636144000,1080491954750208000000,
%T A071551 140810154080474667338550000000,
%U A071551 23183587808948692737291767860055162880,4439413043841128802009762476941510771390464000
%N A071551 a(n) = (9n)!/n!^9.
%H A071551 Vincenzo Librandi, <a href="/A071551/b071551.txt">Table of n, a(n) for n = 0..100</a>
%t A071551 Table[(9n)!/(n)!^9, {n, 0, 20}] (* _Vincenzo Librandi_, Aug 13 2014 *)
%o A071551 (Magma) [Factorial(9*n)/Factorial(n)^9: n in [0..20]]; // _Vincenzo Librandi_, Aug 13 2014
%Y A071551 Sequences (k*n)!/n!^k: A000984 (k = 2), A006480 (k = 3), A008977 (k = 4), A008978 (k = 5), A008979 (k = 6), A071549 (k = 7), A071550 (k = 8), A071552 (k = 10).
%K A071551 nonn
%O A071551 0,2
%A A071551 _Benoit Cloitre_, May 30 2002