Primes p such that x^27 = 2 has no solution mod p, but x^9 = 2 has a solution mod p.

Terms

a(0) =3943a(1) =11287a(2) =12853a(3) =14149a(4) =17659a(5) =20143a(6) =21061a(7) =21277a(8) =23059a(9) =23599a(10) =25759a(11) =26407a(12) =26731a(13) =29863a(14) =32833a(15) =33751a(16) =35803a(17) =37747a(18) =38287a(19) =39367a(20) =39799a(21) =46441a(22) =47737a(23) =47791a(24) =57781a(25) =59887a(26) =61291a(27) =62047a(28) =63127a(29) =65557