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%I #6 Sep 08 2022 08:45:24
%S 1,1,2,1,3,1,1,2,5,1,6,1,7,1,2,2,1,3,10,1,11,1,3,2,13,1,14,1,15,1,1,4,
%T 17,1,2,3,19,1,5,2,21,1,22,1,23,1,6,2,1,5,26,1,3,3,7,2,29,1,30,1,31,1,
%U 2,4,33,1,34,1,35,1,1,6,37,1,38,1,39,1,10,2,41,1,42,1,43,1,11
%N Two-column table read by rows: row n (n >= 1) gives a squarefree integer x and an integer y such that n = x*y^2.
%e Table begins:
%e 1 1
%e 2 1
%e 3 1
%e 1 2 (so 4 = 1*2^2)
%e 5 1
%e 6 1
%e 7 1
%e 2 2 (so 8 = 2*2^2)
%e 1 3
%e 10 1
%e 11 1
%e 3 2
%e 13 1
%e 14 1
%e 15 1
%e 1 4
%o (Magma) at:=0; for n in [1..100] do print Squarefree(n); end for;
%Y The two columns are A007913, A000188.
%K nonn,tabf
%O 1,3
%A _N. J. A. Sloane_, Dec 23 2006
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