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 A195393 #16 Aug 12 2025 12:35:24 %S A195393 1,362880,6402373705728000,10888869450418352160768000000, %T A195393 371993326789901217467999448150835200000000, %U A195393 119622220865480194561963161495657715064383733760000000000 %N A195393 a(n) = (9*n)!. %H A195393 Vincenzo Librandi, <a href="/A195393/b195393.txt">Table of n, a(n) for n = 0..50</a> %t A195393 (9Range[0,10])! (* _Harvey P. Dale_, Jan 25 2023 *) %o A195393 (Magma) [Factorial(9*n): n in [0..10]]; %Y A195393 Cf. A000152, A010050, A100732, A100733, A100734, A195390, A195391, A195392. %K A195393 nonn,easy %O A195393 0,2 %A A195393 _Vincenzo Librandi_, Sep 24 2011