A077808 Number of prime factors of numbers containing in their decimal representation only the digits 0 and 1 (counted with multiplicity).

0, 2, 1, 4, 1, 3, 2, 6, 3, 3, 2, 5, 2, 4, 2, 8, 2, 5, 3, 5, 4, 4, 1, 7, 3, 4, 4, 6, 2, 4, 2, 10, 2, 4, 4, 7, 3, 5, 3, 7, 3, 6, 2, 6, 4, 3, 1, 9, 3, 5, 3, 6, 2, 6, 2, 8, 2, 4, 2, 6, 2, 4, 5, 12, 2, 4, 2, 6, 2, 6, 2, 9, 2, 5, 4, 7, 2, 5, 2, 9, 2, 5, 3, 8, 3, 4, 2, 8, 1, 6, 3, 5, 4, 3, 4, 11, 5, 5, 3, 7, 1, 5