brandNew108 = Complement[r108, R108]

{{1, 1, 4, 4, 9, 1, 16, 2, 4, 13, 1, 8, 8, 1, 1, 4, 14, 16}, {1, 1, 4, 5, 8, 1, 16, 1, 5, 13, ... , 13, 5, 1, 16, 1, 8, 5, 4, 1, 1, 17}, {14, 2, 2, 2, 5, 9, 2, 14, 4, 2, 14, 2, 7, 7, 2, 2, 2, 16}}

Created by Mathematica  (January 22, 2004)