Numbers k such that k^2 * 2^k - 1 is prime.

Terms

a(0) =3a(1) =7a(2) =25a(3) =41a(4) =45a(5) =63a(6) =83a(7) =131a(8) =147a(9) =175a(10) =425a(11) =449a(12) =469a(13) =651a(14) =1345a(15) =1839a(16) =1883a(17) =1913a(18) =2177a(19) =2551a(20) =2907a(21) =3675a(22) =6071a(23) =11743a(24) =14641a(25) =38685a(26) =40857a(27) =47761a(28) =97243