The n-th number m such that a nontrivial prime(n)-th root of unity modulo m exists.

Terms

a(0) =8a(1) =9a(2) =25a(3) =58a(4) =89a(5) =158a(6) =307a(7) =571a(8) =282a(9) =466a(10) =1303a(11) =1043a(12) =913a(13) =1384a(14) =1977a(15) =1486a(16) =3308a(17) =2936a(18) =3497a(19) =3983a(20) =2930a(21) =4426a(22) =2338a(23) =3401a(24) =4668a(25) =6070a(26) =6186a(27) =6430a(28) =10910a(29) =4994