A173800 - OEIS

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.

1, 4, 13, 10, 40, 121, 28, 91, 364, 1093, 82, 328, 820, 3280, 757, 9841, 244, 7381, 29524, 88573, 730, 949, 2920, 6643, 9490, 20440, 26572, 66430, 265720, 797161, 2188, 597871, 2391484, 59293, 551881, 7174453, 6562, 26248, 65620, 253216

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OFFSET

1,2

COMMENTS

This sequence is a permutation of A173793. Row n ends with (3^n-1)/2. The length of row n is A173801(n).

LINKS

T. D. Noe, Rows n=1..200, flattened

CROSSREFS

Sequence in context: A360390 A101181 A160249 * A175174 A369412 A136137

Adjacent sequences: A173797 A173798 A173799 * A173801 A173802 A173803

KEYWORD

nonn,tabf

AUTHOR

T. D. Noe, Feb 25 2010

STATUS

approved