Numbers k such that 387*2^k+1 is prime.

Terms

a(0) =2a(1) =7a(2) =15a(3) =27a(4) =28a(5) =60a(6) =67a(7) =82a(8) =88a(9) =122a(10) =179a(11) =202a(12) =235a(13) =298a(14) =519a(15) =655a(16) =2712a(17) =4132a(18) =5018a(19) =9378a(20) =9688a(21) =17080a(22) =21367a(23) =23127a(24) =61803a(25) =109408a(26) =143095a(27) =143440a(28) =285780a(29) =867355