Numbers k such that 11*2^k + 1 is prime.

Terms

a(0) =1a(1) =3a(2) =5a(3) =7a(4) =19a(5) =21a(6) =43a(7) =81a(8) =125a(9) =127a(10) =209a(11) =211a(12) =3225a(13) =4543a(14) =10179a(15) =15329a(16) =18759a(17) =28277a(18) =93279a(19) =105741a(20) =268009a(21) =412447a(22) =525589a(23) =644677a(24) =886071a(25) =960901a(26) =1343347a(27) =2230369a(28) =2476839a(29) =2691961