Primes p such that x^31 = 2 has no solution mod p.

Terms

a(0) =311a(1) =373a(2) =1117a(3) =1303a(4) =1427a(5) =1489a(6) =1861a(7) =2357a(8) =2543a(9) =2729a(10) =2791a(11) =3163a(12) =3659a(13) =3907a(14) =4093a(15) =4217a(16) =4651a(17) =5023a(18) =5147a(19) =5209a(20) =5333a(21) =5519a(22) =5581a(23) =5953a(24) =6263a(25) =6449a(26) =6883a(27) =7069a(28) =7193a(29) =7937