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 A010800 #21 Aug 14 2023 08:27:35
%S A010800 1,5040,101606400,6145155072000,929147446886400000,
%T A010800 309071606732292096000000,205619158526859285626880000000,
%U A010800 254046582743105184577722777600000000,549289359343832305886569080815616000000000,1979419135331434097492840339627153817600000000000
%N A010800 a(n) = n! * (n+1)! * (n+2)! * (n+3)! * (n+4)! * (n+5)! / (2! * 3! * 4! * 5! * 6!).
%H A010800 Seiichi Manyama, <a href="/A010800/b010800.txt">Table of n, a(n) for n = 1..102</a>
%H A010800 <a href="/index/Fa#factorial">Index entries for sequences related to factorial numbers</a>
%t A010800 Module[{nn=20,c=Times@@(Range[2,6]!)},(Times@@@Partition[ Range[ nn]!, 6,1])/c] (* _Harvey P. Dale_, Jul 29 2015 *)
%Y A010800 Column 6 in triangle A009963.
%K A010800 nonn,easy
%O A010800 1,2
%A A010800 _N. J. A. Sloane_
%E A010800 More terms from _Harvey P. Dale_, Jul 29 2015
%E A010800 Offset changed to 1 by _Seiichi Manyama_, Aug 14 2023