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A031678 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 90. 0
101173, 165730, 248125, 348269, 457201, 458554, 596273, 733097, 895357, 1082129, 1273009, 1275266, 1279786, 1284314, 1286581, 1293394, 1489129, 1508713, 1716941, 1727437, 1732697, 1949777, 1955365, 1960961, 1972177, 1983425, 2221189 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
CROSSREFS
Sequence in context: A255976 A161796 A096929 * A354566 A251959 A250631
KEYWORD
nonn
AUTHOR
EXTENSIONS
First term 8101 removed by Georg Fischer, Jun 16 2019
STATUS
approved

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Last modified July 21 08:59 EDT 2024. Contains 374464 sequences. (Running on oeis4.)