Number of primitive roots modulo prime(n)^2, where prime(n) is n-th prime.

Terms

a(0) =1a(1) =2a(2) =8a(3) =12a(4) =40a(5) =48a(6) =128a(7) =108a(8) =220a(9) =336a(10) =240a(11) =432a(12) =640a(13) =504a(14) =1012a(15) =1248a(16) =1624a(17) =960a(18) =1320a(19) =1680a(20) =1728a(21) =1872a(22) =3280a(23) =3520a(24) =3072a(25) =4000a(26) =3264a(27) =5512a(28) =3888a(29) =5376