Smallest odd prime p such that p^2 | n^(p-1) - 1.

Terms

a(0) =3a(1) =1093a(2) =11a(3) =1093a(4) =20771a(5) =66161a(6) =5a(7) =3a(8) =11a(9) =3a(10) =71a(11) =2693a(12) =863a(13) =29a(14) =29131a(15) =1093a(16) =3a(17) =5a(18) =3a(19) =281