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 A167570 #8 Jun 16 2016 23:24:10
%S A167570 6,80,1344,27648,675840,19169280,619315200,22460497920,903704739840,
%T A167570 39953262182400,1925366729932800,100453916344320000,
%U A167570 5641491941897011200,339325293097805414400,21763622246962692096000
%N A167570 The third right hand column of triangle A167569.
%H A167570 G. C. Greubel, <a href="/A167570/b167570.txt">Table of n, a(n) for n = 3..150</a>
%F A167570 a(n) = 4^(n-3)*(n-3)!*(2*n-3)!/(2*n-5)!.
%t A167570 Table[4^(n-3) (n-3)! (2n-3)!/(2n-5)!,{n,3,20}] (* _Harvey P. Dale_, Nov 27 2011 *)
%Y A167570 Equals the third right hand column of triangle A167569.
%K A167570 easy,nonn
%O A167570 3,1
%A A167570 _Johannes W. Meijer_, Nov 10 2009