Numbers k such that 227*2^k+1 is prime.

Terms

a(0) =11a(1) =15a(2) =35a(3) =51a(4) =83a(5) =87a(6) =99a(7) =183a(8) =4619a(9) =4659a(10) =6939a(11) =7503a(12) =10647a(13) =13007a(14) =18459a(15) =19599a(16) =26363a(17) =43719a(18) =53171a(19) =140679a(20) =249599a(21) =308139a(22) =797603a(23) =1542323a(24) =1786779a(25) =5213195