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%I #7 Mar 12 2015 19:22:54
%S 1,8,9,5,16,18,20,11,13,27,28,17,36,40,44,23,48,29,50,31,54,56,60,37,
%T 38,68,41,42,76,80,81,51,88,90,92,58,98,99,100,65,108,112,116,70,71,
%U 121,124,77,78,79,132,83,136,86,144,89,148,150,152,95,156,160,102,103,168
%N a(1) = 1, a(n) = n-th squarefree number if n is not squarefree else a(n) is the n-th nonsquarefree number.
%e a(9) = 13, the 9th squarefree number, A005117(9).
%Y Cf. A005117, A013929, A088611.
%K nonn
%O 1,2
%A _Amarnath Murthy_, Oct 16 2003
%E Corrected and extended by _Ray Chandler_, Oct 18 2003
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