Primes p such that 31 is not a square mod p.

Terms

a(0) =7a(1) =13a(2) =17a(3) =19a(4) =29a(5) =37a(6) =47a(7) =53a(8) =59a(9) =61a(10) =67a(11) =71a(12) =73a(13) =89a(14) =103a(15) =107a(16) =131a(17) =137a(18) =163a(19) =181a(20) =191a(21) =197a(22) =211a(23) =227a(24) =229a(25) =241a(26) =269a(27) =277a(28) =283a(29) =307