Primes p such that x^3 = 15 has no solution mod p.

Terms

a(0) =13a(1) =19a(2) =37a(3) =43a(4) =61a(5) =73a(6) =97a(7) =103a(8) =109a(9) =127a(10) =139a(11) =151a(12) =157a(13) =163a(14) =181a(15) =193a(16) =199a(17) =211a(18) =241a(19) =271a(20) =307a(21) =313a(22) =337a(23) =349a(24) =373a(25) =379a(26) =409a(27) =421a(28) =433a(29) =439