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

Terms

a(0) =1a(1) =2a(2) =6a(3) =14a(4) =66a(5) =86a(6) =230a(7) =2006a(8) =3876a(9) =3920a(10) =5418a(11) =8820a(12) =11900a(13) =16669a(14) =19446a(15) =28243a(16) =33408a(17) =37919a(18) =40595