A071192 Least m>n such that the number of prime factors of m and n differ by 1.

2, 4, 4, 5, 6, 7, 9, 9, 11, 11, 14, 14, 14, 17, 17, 18, 21, 21, 21, 21, 23, 23, 25, 27, 27, 27, 33, 33, 33, 33, 33, 36, 37, 37, 37, 42, 38, 41, 41, 42, 46, 46, 46, 46, 46, 47, 49, 54, 50, 51, 52, 54, 55, 63, 59, 63, 59, 59, 62, 63, 62, 63, 65