Numbers whose least quadratic nonresidue (A020649) is 13.

Terms

a(0) =479a(1) =958a(2) =1151a(3) =1319a(4) =2302a(5) =2351a(6) =2638a(7) =2689a(8) =3529a(9) =3671a(10) =3911a(11) =4702a(12) =4751a(13) =4919a(14) =5378a(15) =5519a(16) =5569a(17) =6599a(18) =7058a(19) =7342a(20) =7559a(21) =7561a(22) =7681a(23) =7822a(24) =8951a(25) =9241a(26) =9502a(27) =9601a(28) =9719a(29) =9769