%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