Numbers whose least quadratic nonresidue (A020649) is 3.

Terms

a(0) =7a(1) =14a(2) =17a(3) =31a(4) =34a(5) =41a(6) =49a(7) =62a(8) =79a(9) =82a(10) =89a(11) =98a(12) =103a(13) =113a(14) =119a(15) =127a(16) =137a(17) =151a(18) =158a(19) =161a(20) =178a(21) =199a(22) =206a(23) =217a(24) =223a(25) =226a(26) =233a(27) =238a(28) =254a(29) =257