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%I #2 Mar 31 2012 10:29:09
%S 2,461,92377,269128937219,51913710643776705684835559,
%T 3017467217880703353213932318284163999
%N Primes of the form (2*n)!/(2*(n!)^2)-1.
%C The next term (2*306)!/(2*(306!)^2)-1 has 183 decimal digits.
%Y Cf. A001700(n-1)=(2*n)!/(2*(n!)^2), A112861 gives n such that (2*n)!/(2*(n!)^2)-1 is prime, A112864 gives primes of the form (2*n)!/(2*(n!)^2)+1.
%K nonn
%O 1,1
%A _Hugo Pfoertner_, Sep 30 2005
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