Numbers k such that k!*k!! - 1 is prime.

Terms

a(0) =2a(1) =3a(2) =4a(3) =10a(4) =11a(5) =13a(6) =17a(7) =22a(8) =26a(9) =36a(10) =79a(11) =196a(12) =1097a(13) =6926