Numbers k such that 13*2^k+1 is prime.

Terms

a(0) =2a(1) =8a(2) =10a(3) =20a(4) =28a(5) =82a(6) =188a(7) =308a(8) =316a(9) =1000a(10) =28280a(11) =38008a(12) =43856a(13) =88018a(14) =109258a(15) =114296a(16) =521306a(17) =562456a(18) =684560a(19) =1038896a(20) =1499876a(21) =1861732a(22) =4998362a(23) =5523860a(24) =6481780a(25) =8989858