A130024 a(1)=1. a(n) = number of earlier terms which don't have 2 or more distinct prime divisors in common with n.

1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 10, 12, 13, 14, 15, 16, 15, 18, 17, 20, 21, 22, 20, 24, 25, 26, 26, 28, 19, 30, 31, 32, 33, 34, 30, 36, 37, 38, 33, 40, 31, 42, 42, 40, 45, 46, 38, 48, 41, 50, 49, 52, 43, 54, 51, 56, 57, 58, 38, 60, 61, 59, 63, 64, 50, 66, 66, 68, 53, 70, 57, 72