This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A112864 #6 Jun 13 2024 15:00:12
%S A112864 2,11,127,463,20058301,17672631901,16123801841551,
%T A112864 51913710643776705684835561,12738806129490428451365214301,
%U A112864 760401738905937245009910944207609329,740106499224393094996908447741294397438051
%N A112864 Primes of the form (2*n)!/(2*(n!)^2)+1.
%t A112864 Select[Table[(2n)!/(2(n!)^2)+1,{n,70}],PrimeQ] (* _Harvey P. Dale_, Feb 28 2023 *)
%Y A112864 Cf. A001700(n-1)=(2*n)!/(2*(n!)^2), A112863 gives n such that (2*n)!/(2*(n!)^2)+1 is prime, A112862 gives primes of the form (2*n)!/(2*(n!)^2)-1.
%K A112864 nonn
%O A112864 1,1
%A A112864 _Hugo Pfoertner_, Sep 30 2005