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 A100404 #12 Jun 07 2021 04:51:28
%S A100404 2,1,6,24,168,1320,12960,146160,1895040,27578880,446342400,7943443200,
%T A100404 154238515200,3244277836800,73491299481600,1783667837952000,
%U A100404 46176597282816000,1270159805730816000,36992915271696384000,1137260043722170368000,36802508677688033280000
%N A100404 a(n) = L(n) * n! where L(n) are the Lucas numbers.
%F A100404 E.g.f.: (2 - x) / (1 - x - x^2). - _Ilya Gutkovskiy_, Jun 07 2021
%e A100404 If n=3, L(3) * 3! = 24.
%e A100404 If n=4, L(4) * 4! = 168.
%t A100404 Table[LucasL[n, 1]*n!, {n, 0, 20}] (* _Zerinvary Lajos_, Jul 09 2009 *)
%Y A100404 Cf. A000032, A005443.
%K A100404 nonn
%O A100404 0,1
%A A100404 _Parthasarathy Nambi_, Jan 11 2005
%E A100404 Extended by _Zerinvary Lajos_, Jul 09 2009
%E A100404 Edited by _R. J. Mathar_, Jul 31 2009