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A173800 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. 3

%I

%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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Last modified July 2 01:17 EDT 2022. Contains 354984 sequences. (Running on oeis4.)