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%I #5 Aug 11 2012 14:01:24
%S 1,1,1,2,4,11,30,96,339,1316,5584,25733,128025,683949,3905083,
%T 23731187,152934464,1041782238,7479469995,56448098958,446768591341,
%U 3700276748921,32007269639380,288630046441757,2708888570942365,26419890078249485,267389254029561667
%N Floor(n!^2 / n^n).
%e a(4) = Floor((4!)^2 / (4^4)) = Floor(24^2 / 256) = Floor(2.25) = 2.
%o (Python)
%o f = 1
%o for n in range(1,33):
%o print f*f // n**n,
%o f *= n+1
%Y Cf. A064546, A063709, A055775.
%K nonn
%O 1,4
%A _Alex Ratushnyak_, Aug 11 2012
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