A032660 Smallest n concatenated with n + d (d = 0,1,2,3,...) is a lucky number.

3, 6, 1, 2, 1, 4, 5, 6, 59, 2, 1, 4, 5, 6, 1, 6, 3, 2, 3, 10, 7, 2, 7, 4, 3, 4, 1, 14, 1, 2, 5, 10, 1, 2, 1, 2, 3, 6, 7, 2, 1, 14, 21, 10, 11, 6, 3, 4, 5, 6, 1, 12, 9, 34, 3, 22, 11, 2, 1, 2, 15, 18, 1, 12, 3, 2, 9, 6, 1, 12, 1, 2, 5, 4, 5, 8, 13, 8, 5, 4, 7, 2, 3, 2, 9, 4, 5, 2, 1, 8, 3, 4, 1, 6, 1