Least nonsquare having square residues for all moduli 2 through n.

Terms

a(0) =2a(1) =3a(2) =12a(3) =21a(4) =21a(5) =21a(6) =60a(7) =184a(8) =184a(9) =280a(10) =280a(11) =364a(12) =364a(13) =364a(14) =1456a(15) =3124a(16) =3124a(17) =5236a(18) =5236a(19) =5236a(20) =5236a(21) =17185a(22) =17185a(23) =25249a(24) =25249a(25) =25249a(26) =25249a(27) =49504a(28) =49504a(29) =49504