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

Terms

a(0) =1a(1) =3a(2) =5a(3) =11a(4) =13a(5) =61a(6) =115a(7) =653a(8) =889a(9) =957a(10) =997a(11) =1013a(12) =1421a(13) =2329a(14) =2675a(15) =4795a(16) =5755a(17) =7059a(18) =7405a(19) =7613a(20) =7973a(21) =9445a(22) =23467a(23) =31769a(24) =32417a(25) =74875a(26) =83029a(27) =85173