Primes p such that 57 is a square mod p.

Terms

a(0) =2a(1) =3a(2) =7a(3) =19a(4) =29a(5) =41a(6) =43a(7) =53a(8) =59a(9) =61a(10) =71a(11) =73a(12) =89a(13) =107a(14) =113a(15) =139a(16) =157a(17) =163a(18) =167a(19) =173a(20) =179a(21) =199a(22) =227a(23) =229a(24) =257a(25) =269a(26) =271a(27) =277a(28) =281a(29) =283