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

Terms

a(0) =2a(1) =3a(2) =4a(3) =5a(4) =15a(5) =23a(6) =53a(7) =57a(8) =75a(9) =233a(10) =464a(11) =671a(12) =1431a(13) =2021a(14) =5861a(15) =6056a(16) =9063a(17) =14801a(18) =22682a(19) =74055