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Product of the numbers from (n-1)^2+1 to n^2.
1

%I #5 Dec 05 2013 19:56:45

%S 1,24,15120,57657600,741354768000,23982224839372800,

%T 1635195634511530291200,208598907329474462760960000,

%U 45687336913897607308591411200000,16098703928453240136983769705676800000,8673124144989289711553231707961190973440000

%N Product of the numbers from (n-1)^2+1 to n^2.

%F a(n) = (n^2)!/((n-1)^2)! - _T. D. Noe_, Oct 25 2004

%e a(1) = 1, a(2) = 2*3*4, a(3) = 5*6*7*8*9.

%t Table[(n^2)!/((n-1)^2)!, {n, 11}]

%Y Cf. A091776.

%K nonn

%O 1,2

%A _Amarnath Murthy_, Feb 16 2004

%E More terms from _T. D. Noe_, Oct 25 2004