A124371 a(n) = number of earlier terms a(k) such that a(k)*n is a square.

0, 1, 1, 3, 1, 1, 1, 1, 7, 1, 1, 2, 1, 1, 1, 12, 1, 2, 1, 1, 1, 1, 1, 1, 19, 1, 3, 2, 1, 1, 1, 4, 1, 1, 1, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 5, 38, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 51, 1, 1, 1, 1, 1, 1, 1, 5, 1, 1, 5, 2, 1, 1, 1, 4, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 6, 1, 82, 1, 1