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.

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

Offset

1,1

Links

Table of n, a(n) for n=1..27.

Crossrefs

Sequence in context: A255976 A161796 A096929 * A354566 A251959 A250631

Adjacent sequences: A031675 A031676 A031677 * A031679 A031680 A031681

Keyword

nonn

Author

David W. Wilson

Extensions

First term 8101 removed by Georg Fischer, Jun 16 2019

Status

approved