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%I #5 Mar 30 2012 17:22:55
%S 1,4,13,10,40,121,28,91,364,1093,82,328,820,3280,757,9841,244,7381,
%T 29524,88573,730,949,2920,6643,9490,20440,26572,66430,265720,797161,
%U 2188,597871,2391484,59293,551881,7174453,6562,26248,65620,253216
%N Irregular triangle in which row n has primitive numbers k such that 1/k is in the Cantor set and the fraction 1/k has period n.
%C This sequence is a permutation of A173793. Row n ends with (3^n-1)/2. The length of row n is A173801(n).
%H T. D. Noe, <a href="/A173800/b173800.txt">Rows n=1..200, flattened</a>
%K nonn,tabf
%O 1,2
%A _T. D. Noe_, Feb 25 2010
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