Numbers k such that k![4] - 16 is prime, where k![4] = A007662(k) = quadruple factorial.

Terms

a(0) =7a(1) =9a(2) =13a(3) =15a(4) =17a(5) =29a(6) =31a(7) =35a(8) =39a(9) =105a(10) =109a(11) =147a(12) =173a(13) =239a(14) =287a(15) =293a(16) =505a(17) =711a(18) =837a(19) =947a(20) =1015a(21) =1025a(22) =1977a(23) =2917a(24) =4035a(25) =4935a(26) =5935a(27) =7693a(28) =10911a(29) =11367