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A020408 Numbers k such that the continued fraction for sqrt(k) has period 69. 0
1549, 1741, 4273, 4349, 4513, 5437, 5674, 6037, 7162, 8537, 9109, 9661, 10666, 13306, 14149, 14549, 16930, 19769, 20626, 22049, 22522, 22874, 22937, 24161, 24274, 25673, 27386, 27490, 27586, 27673, 30757, 30773, 30994, 32173, 34525, 35533, 35909, 36037 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..38.

CROSSREFS

Cf. A003285.

Sequence in context: A157347 A255356 A336221 * A259424 A323330 A252403

Adjacent sequences:  A020405 A020406 A020407 * A020409 A020410 A020411

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified January 17 22:33 EST 2022. Contains 350410 sequences. (Running on oeis4.)