Numbers k such that k![4] - 1024 is prime, where k![4] = A007662(k) = quadruple factorial.

Terms

a(0) =15a(1) =19a(2) =21a(3) =25a(4) =27a(5) =33a(6) =47a(7) =51a(8) =55a(9) =85a(10) =95a(11) =153a(12) =163a(13) =187a(14) =191a(15) =315a(16) =335a(17) =363a(18) =375a(19) =419a(20) =433a(21) =669a(22) =873a(23) =1097a(24) =1113a(25) =1235a(26) =1819a(27) =1969a(28) =2043a(29) =2391