A070678 Smallest m in range 1..phi(n) such that 7^m == 1 mod n, or 0 if no such number exists.

0, 1, 1, 2, 4, 1, 0, 2, 3, 4, 10, 2, 12, 0, 4, 2, 16, 3, 3, 4, 0, 10, 22, 2, 4, 12, 9, 0, 7, 4, 15, 4, 10, 16, 0, 6, 9, 3, 12, 4, 40, 0, 6, 10, 12, 22, 23, 2, 0, 4, 16, 12, 26, 9, 20, 0, 3, 7, 29, 4, 60, 15, 0, 8, 12, 10, 66, 16, 22, 0, 70, 6, 24, 9, 4, 6, 0, 12