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A020420 Numbers k such that the continued fraction for sqrt(k) has period 81. 0
3169, 3697, 5233, 6269, 6521, 9521, 9754, 9946, 10169, 12149, 12202, 12385, 13738, 15461, 15706, 15898, 17321, 18922, 19853, 20065, 20341, 21977, 21985, 23333, 24154, 24457, 24953, 25013, 25034, 25181, 27109, 27781, 27802, 28114, 28249, 28786, 28873 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
CROSSREFS
Sequence in context: A140350 A309024 A217247 * A155484 A345599 A345858
KEYWORD
nonn
AUTHOR
STATUS
approved

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Last modified April 22 02:54 EDT 2024. Contains 371887 sequences. (Running on oeis4.)