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 A091777 #5 Dec 05 2013 19:56:45
%S A091777 1,24,15120,57657600,741354768000,23982224839372800,
%T A091777 1635195634511530291200,208598907329474462760960000,
%U A091777 45687336913897607308591411200000,16098703928453240136983769705676800000,8673124144989289711553231707961190973440000
%N A091777 Product of the numbers from (n-1)^2+1 to n^2.
%F A091777 a(n) = (n^2)!/((n-1)^2)! - _T. D. Noe_, Oct 25 2004
%e A091777 a(1) = 1, a(2) = 2*3*4, a(3) = 5*6*7*8*9.
%t A091777 Table[(n^2)!/((n-1)^2)!, {n, 11}]
%Y A091777 Cf. A091776.
%K A091777 nonn
%O A091777 1,2
%A A091777 _Amarnath Murthy_, Feb 16 2004
%E A091777 More terms from _T. D. Noe_, Oct 25 2004