A031673 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 85.

16393, 45821, 88853, 146770, 148306, 149077, 221021, 311533, 523018, 525914, 533189, 662957, 964853, 974698, 1130594, 1132721, 1136981, 1141249, 1143386, 1149809, 1318633, 1528537, 1538441, 1543405, 1553357, 1738085, 1743361, 1764545

Offset

1,1

Links

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

Crossrefs

Sequence in context: A013962 A036092 A282597 * A168507 A045037 A168633

Adjacent sequences: A031670 A031671 A031672 * A031674 A031675 A031676

Keyword

nonn

Author

David W. Wilson

Extensions

First term 7226 removed by Georg Fischer, Jun 16 2019

Status

approved