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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
OFFSET
1,1
CROSSREFS
Subsequence of A003814.
Sequence in context: A257381 A257267 A175581 * A234736 A236094 A043622
KEYWORD
nonn
EXTENSIONS
First term 5777 removed by Georg Fischer, Jun 16 2019
STATUS
approved