

A120837


a(n) = the smallest positive integer which does not occur earlier in the sequence and which is coprime to the number of positive divisors of n.


0



1, 3, 5, 2, 7, 9, 11, 13, 4, 15, 17, 19, 21, 23, 25, 6, 27, 29, 31, 35, 33, 37, 39, 41, 8, 43, 45, 47, 49, 51, 53, 55, 57, 59, 61, 10, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 87, 14, 85, 89, 91, 93, 95, 97, 99, 101, 103, 105, 107, 109, 111, 113, 12, 115, 117, 119, 121
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