Primes p such that 53 is not a square mod p.

Terms

a(0) =2a(1) =3a(2) =5a(3) =19a(4) =23a(5) =31a(6) =41a(7) =61a(8) =67a(9) =71a(10) =73a(11) =79a(12) =83a(13) =101a(14) =103a(15) =109a(16) =127a(17) =137a(18) =139a(19) =151a(20) =157a(21) =167a(22) =173a(23) =179a(24) =181a(25) =191a(26) =193a(27) =233a(28) =239a(29) =251