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A031642 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 54. 0
6733, 18521, 36149, 36913, 59617, 61090, 88925, 90121, 124073, 165874, 167506, 211889, 264557, 270761, 272845, 323065, 327625, 388658, 397429, 399953, 457601, 458954, 464386, 465749, 467114, 471221, 615497, 618637, 704882, 706561 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..30.

CROSSREFS

Sequence in context: A049507 A064160 A249463 * A257486 A345591 A345849

Adjacent sequences:  A031639 A031640 A031641 * A031643 A031644 A031645

KEYWORD

nonn

AUTHOR

David W. Wilson

EXTENSIONS

First term 2917 removed by Georg Fischer, Jun 16 2019

STATUS

approved

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Last modified July 1 06:50 EDT 2022. Contains 354952 sequences. (Running on oeis4.)