Primes p such that x^54 = 2 has no solution mod p, but x^18 = 2 has a solution mod p.

Terms

a(0) =3943a(1) =11287a(2) =20143a(3) =23599a(4) =25759a(5) =26407a(6) =29863a(7) =32833a(8) =33751a(9) =38287a(10) =39367a(11) =39799a(12) =46441a(13) =47737a(14) =47791a(15) =59887a(16) =62047a(17) =63127a(18) =68311a(19) =73063a(20) =79273a(21) =82351a(22) =84457a(23) =84673a(24) =88129a(25) =90289a(26) =91639a(27) =93529a(28) =94447a(29) =101089