Numbers k such that either k^2*2^k-1 or k^2*2^k+1 is prime, but not both.

Terms

a(0) =1a(1) =2a(2) =4a(3) =7a(4) =21a(5) =25a(6) =30a(7) =33a(8) =41a(9) =45a(10) =57a(11) =63a(12) =83a(13) =100a(14) =131a(15) =142a(16) =144a(17) =147a(18) =150a(19) =175a(20) =198a(21) =225a(22) =304a(23) =425a(24) =449a(25) =469a(26) =513a(27) =651a(28) =782a(29) =858