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

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =6a(5) =12a(6) =15a(7) =20a(8) =21a(9) =44a(10) =54a(11) =75a(12) =102a(13) =116a(14) =182a(15) =288a(16) =326a(17) =344a(18) =357a(19) =458a(20) =1296a(21) =2394a(22) =2913a(23) =4749a(24) =6834a(25) =10425a(26) =17448