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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
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 (list; graph; refs; listen; history; text; internal format)
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: A144290 A101181 A160249 * A175174 A136137 A287895

Adjacent sequences:  A173797 A173798 A173799 * A173801 A173802 A173803

KEYWORD

nonn,tabf

AUTHOR

T. D. Noe, Feb 25 2010

STATUS

approved

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Last modified May 23 02:17 EDT 2022. Contains 353959 sequences. (Running on oeis4.)