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A031664 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 76. 0
119797, 176521, 250169, 327409, 420193, 422789, 425393, 426698, 530345, 533261, 643645, 653305, 766154, 774929, 780218, 783754, 905026, 906929, 910741, 914561, 918389, 920306, 926069, 1061629, 1219657, 1224077, 1232941, 1241837 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..28.

CROSSREFS

Subsequence of A003814.

Sequence in context: A257381 A257267 A175581 * A234736 A236094 A043622

Adjacent sequences:  A031661 A031662 A031663 * A031665 A031666 A031667

KEYWORD

nonn

AUTHOR

David W. Wilson

EXTENSIONS

First term 5777 removed by Georg Fischer, Jun 16 2019

STATUS

approved

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Last modified September 30 13:23 EDT 2022. Contains 357105 sequences. (Running on oeis4.)