A031677 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 89.

163297, 240221, 242185, 244157, 338893, 454501, 573338, 577889, 716077, 726265, 891577, 1051154, 1065553, 1067618, 1239394, 1246081, 1248314, 1250549, 1257266, 1259509, 1261754, 1264001, 1445533, 1459993, 1464829, 1680457, 1685645

Offset

1,1

Links

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

Crossrefs

Sequence in context: A282948 A230925 A204653 * A234989 A110072 A196675

Adjacent sequences: A031674 A031675 A031676 * A031678 A031679 A031680

Keyword

nonn

Author

David W. Wilson

Extensions

First term 7922 removed by Georg Fischer, Jun 16 2019

Status

approved