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 A374648 #8 Jul 28 2024 17:05:08
%S A374648 0,0,0,0,12,60,240,1680,18480,45360,574560,6320160,19293120,250810560,
%T A374648 3615131520,10637827200,173837664000,2955240288000,8874542476800,
%U A374648 168616307059200,3378360124339200,10123012406707200,222987858828134400,5128720753047091200
%N A374648 a(n) = n! / (floor(n/3))! - n! / (floor(n/2))!.
%F A374648 a(n) = A355988(n) - A081125(n). - _Vaclav Kotesovec_, Jul 27 2024
%t A374648 Table[n!/(Floor[n/3]!) - n!/(Floor[n/2]!), {n, 0, 24}]
%Y A374648 Cf. A000142, A081125, A355988.
%K A374648 nonn
%O A374648 0,5
%A A374648 _Clark Kimberling_, Jul 25 2024