Primes of the form 2^(n-1)*(n+1)^2-(-1)^n.

Terms

a(0) =5a(1) =17a(2) =199a(3) =577a(4) =1567a(5) =25601a(6) =147457a(7) =346111a(8) =47316991a(9) =104857601a(10) =231211007a(11) =1109393407a(12) =11341398017a(13) =52613349377