Numbers k such that 2^k + k - 1 is a prime.

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =10a(5) =16a(6) =86a(7) =344a(8) =406a(9) =424a(10) =2324a(11) =6358a(12) =11026a(13) =11804a(14) =48926a(15) =266744