A031618 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 30.

5801, 11498, 18577, 28345, 29021, 39373, 40169, 51754, 54049, 66853, 85625, 100297, 102841, 121633, 124433, 125138, 126554, 142001, 143509, 144266, 145786, 146549, 148081, 150394, 170473, 175453, 194441, 201545, 218117, 219985, 224690

Offset

1,1

Links

Table of n, a(n) for n=1..31.

Crossrefs

Subsequence of A003814.

Sequence in context: A282335 A164649 A233045 * A206655 A270866 A251920

Adjacent sequences: A031615 A031616 A031617 * A031619 A031620 A031621

Keyword

nonn

Author

David W. Wilson

Extensions

First term 901 removed by Georg Fischer, Jun 16 2019

Status

approved