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A031657 Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 69. 0
58613, 96802, 98050, 146045, 202669, 268549, 348389, 350753, 351938, 430697, 433325, 435961, 441257, 632554, 640529, 645338, 745394, 747121, 752314, 754049, 755786, 761009, 764501, 880573, 1008857, 1024985, 1029037, 1145861, 1148002 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..29.

CROSSREFS

Sequence in context: A230576 A075980 A031684 * A251519 A255781 A234447

Adjacent sequences: A031654 A031655 A031656 * A031658 A031659 A031660

KEYWORD

nonn

AUTHOR

David W. Wilson

EXTENSIONS

First term 4762 removed by Georg Fischer, Jun 16 2019

STATUS

approved

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Last modified February 3 04:55 EST 2023. Contains 360024 sequences. (Running on oeis4.)