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 A196411 #15 Jun 03 2025 11:28:26 %S A196411 1,0,-14,-75,-232,-505,-576,2639,36224,356319,3618800,39902159, %T A196411 478980864,6226992239,87178252784,1307674317375,20922789822464, %U A196411 355687428012479,6402373705623024,121645100408701679,2432902008176480000 %N A196411 n! - n^4. %H A196411 Vincenzo Librandi, <a href="/A196411/b196411.txt">Table of n, a(n) for n = 0..400</a> %o A196411 (Magma) [Factorial(n)-n^4: n in [0..20]]; %o A196411 (PARI) a(n)=n!-n^4 \\ _Charles R Greathouse IV_, Nov 21 2011 %Y A196411 Cf. A005008, A005096, A007339, A144768 %K A196411 sign,easy,less %O A196411 0,3 %A A196411 _Vincenzo Librandi_, Oct 06 2011