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%I #4 Aug 02 2022 13:28:26
%S 3,13,30241,670442572801,20007974164906320568399715106816000001,
%T 31370018474571622355156067715319586116075520000001
%N Primes of the form (2*n)!/n!+1.
%C Next term (2*72)!/72!+1 has 146 decimal digits.
%t Select[Table[(2n)!/n!+1,{n,50}],PrimeQ] (* _Harvey P. Dale_, Aug 02 2022 *)
%Y Cf. A112855 n such that (2*n)!/n!+1 is prime, A112854 primes of the form (2*n)!/n!-1.
%K nonn
%O 1,1
%A _Hugo Pfoertner_, Sep 25 2005
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