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%I #13 Jun 13 2024 17:00:41
%S 2,461,92377,269128937219,51913710643776705684835559,
%T 3017467217880703353213932318284163999
%N Primes of the form (2*k)!/(2*(k!)^2)-1.
%C The next term (2*306)!/(2*(306!)^2)-1 has 183 decimal digits.
%t Select[Table[(2n)!/(2(n!)^2)-1, {n, 70}],PrimeQ] (* _James C. McMahon_, Jun 13 2024 *)
%Y Cf. A001700, A112861, A112864.
%K nonn
%O 1,1
%A _Hugo Pfoertner_, Sep 30 2005