Numbers k such that 2*k! + 1 is prime.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =5a(5) =12a(6) =18a(7) =35a(8) =51a(9) =53a(10) =78a(11) =209a(12) =396a(13) =4166a(14) =9091a(15) =9587a(16) =13357a(17) =15917a(18) =17652a(19) =46127a(20) =66480