Primes p such that 26 is not a square mod p.

Terms

a(0) =3a(1) =7a(2) =29a(3) =31a(4) =41a(5) =43a(6) =47a(7) =53a(8) =61a(9) =71a(10) =73a(11) =89a(12) =97a(13) =101a(14) =107a(15) =131a(16) =137a(17) =139a(18) =151a(19) =157a(20) =167a(21) =173a(22) =179a(23) =181a(24) =193a(25) =211a(26) =223a(27) =239a(28) =241a(29) =251