Primes such that x^16 = 2 has a solution in Z/pZ, but x^32 = 2 does not.

Terms

a(0) =257a(1) =2113a(2) =2657a(3) =7489a(4) =10177a(5) =15073a(6) =18593a(7) =23041a(8) =25121a(9) =25409a(10) =25537a(11) =25793a(12) =27809a(13) =30881a(14) =30977a(15) =32321a(16) =37409a(17) =38273a(18) =41729a(19) =43649a(20) =51137a(21) =51361a(22) =54721a(23) =59809a(24) =63841a(25) =67073a(26) =67489a(27) =75553a(28) =77569a(29) =83009