Numbers n such that n!! + 2^2 is prime.

Terms

a(0) =0a(1) =1a(2) =3a(3) =5a(4) =7a(5) =11a(6) =17a(7) =29a(8) =39a(9) =43a(10) =73a(11) =93a(12) =315a(13) =549a(14) =2059a(15) =5543a(16) =6937a(17) =22819a(18) =34523