Numbers k such that 5*2^k + 7 is prime.

Terms

a(0) =1a(1) =3a(2) =5a(3) =7a(4) =11a(5) =15a(6) =19a(7) =21a(8) =31a(9) =37a(10) =47a(11) =51a(12) =59a(13) =109a(14) =163a(15) =199a(16) =221a(17) =659a(18) =709a(19) =1795a(20) =2525a(21) =3103a(22) =6139a(23) =7887a(24) =13699a(25) =18255a(26) =19469a(27) =22741a(28) =23311a(29) =59141