A056148 a(0) = 1, a(n) = number of a(k), for 0 <= k <= n-1, that divide n.

1, 1, 2, 2, 4, 2, 5, 2, 7, 2, 8, 2, 9, 2, 10, 3, 11, 2, 12, 2, 14, 4, 12, 2, 18, 3, 12, 5, 16, 2, 18, 2, 18, 5, 14, 6, 26, 2, 15, 4, 23, 2, 22, 2, 22, 9, 18, 2, 29, 3, 22, 5, 22, 2, 29, 7, 27, 5, 21, 2, 37, 2, 21, 11, 26, 7, 31, 2, 25, 6, 33, 2, 41, 2, 25, 13, 27, 7, 32, 2, 36, 9, 26, 2, 45