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%I
%S 3,25,721,40321,3628801,479001601,87178291201,20922789888001,
%T 6402373705728001,2432902008176640001,1124000727777607680001,
%U 620448401733239439360001,403291461126605635584000001
%N a(n)= numerator of ((2n)! + 1)/(n!).
%t Table[Numerator[((2n)! + 1)/(n!)], {n, 1, 30}]
%Y Cf. A028387, A062938, A127227, A127228, A127229, A127230.
%K nonn,frac
%O 1,1
%A _Artur Jasinski_, Jan 09 2007
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