Primes p such that x^18 = 2 has no solution mod p, but x^6 = 2 has a solution mod p.

Terms

a(0) =433a(1) =919a(2) =1423a(3) =1999a(4) =2017a(5) =2143a(6) =2287a(7) =2791a(8) =2953a(9) =3457a(10) =3889a(11) =4177a(12) =4519a(13) =4663a(14) =5113a(15) =5167a(16) =6679a(17) =6967a(18) =8713a(19) =9631a(20) =9649a(21) =9721a(22) =10009a(23) =11863a(24) =12241a(25) =12583a(26) =12799a(27) =13177a(28) =13591a(29) =15913