

A138244


a(1)=1; for n>1, a(n) = smallest integer > a(n1) such that a(n) is coprime to (a(k)  a(k1)) for all k, 2 <= k <= n and such that (a(n)  a(n1)) doesn't equal (a(k)  a(k1)) for any k, 2 <= k <= n1.


3



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