Numbers k such that 7*2^k + 3 is prime.

Terms

a(0) =1a(1) =2a(2) =3a(3) =5a(4) =13a(5) =14a(6) =21a(7) =30a(8) =50a(9) =363a(10) =391a(11) =1418a(12) =2541a(13) =2803a(14) =7334a(15) =10229a(16) =12078a(17) =14034a(18) =15949a(19) =22878a(20) =25554a(21) =31554a(22) =41739a(23) =62931a(24) =92443a(25) =103863a(26) =118843a(27) =121669a(28) =124839