A031671 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 83.

85313, 85898, 142210, 291769, 392101, 394609, 395866, 504389, 630797, 633977, 764317, 771325, 916378, 927898, 1078069, 1086389, 1090561, 1098929, 1277629, 1282153, 1460105, 1469785, 1474637, 1479497, 1662482, 1665061, 1667642

Offset

1,1

Links

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

Crossrefs

Subsequence of A003814.

Sequence in context: A236668 A194777 A375263 * A371641 A371821 A010083

Adjacent sequences: A031668 A031669 A031670 * A031672 A031673 A031674

Keyword

nonn

Author

David W. Wilson

Extensions

First term 6890 removed by Georg Fischer, Jun 16 2019

Status

approved