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a(n) is the index of the first occurrence of n in A278102.
2

%I #7 Jan 18 2017 22:45:33

%S 1,2,3,6,22,23,177,129,4954,58976,288436,238773

%N a(n) is the index of the first occurrence of n in A278102.

%D R. B. Eggleton, J. S. Kimberley and J. A. MacDougall, Square-free rank of integers, submitted.

%K nonn,hard,more

%O 1,2

%A _Jason Kimberley_, Nov 26 2016