A076686 a(n)=min(core(n),phi(n)) where core(n) is the squarefree part of n.

1, 1, 2, 1, 4, 2, 6, 2, 1, 4, 10, 3, 12, 6, 8, 1, 16, 2, 18, 5, 12, 10, 22, 6, 1, 12, 3, 7, 28, 8, 30, 2, 20, 16, 24, 1, 36, 18, 24, 10, 40, 12, 42, 11, 5, 22, 46, 3, 1, 2, 32, 13, 52, 6, 40, 14, 36, 28, 58, 15, 60, 30, 7, 1, 48, 20, 66, 17, 44, 24, 70, 2, 72, 36, 3, 19, 60, 24, 78, 5