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

Terms

a(0) =1a(1) =2a(2) =4a(3) =10a(4) =70a(5) =134a(6) =146a(7) =190a(8) =218a(9) =292a(10) =478a(11) =7136a(12) =15964a(13) =19988a(14) =100790a(15) =111442a(16) =181874a(17) =202112