A031648 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 60.

23129, 45418, 74065, 111677, 153833, 206341, 262433, 263458, 265514, 268613, 399865, 487733, 566129, 569141, 572161, 573674, 575189, 576706, 660073, 669853, 673129, 764717, 775241, 778765, 782297, 867722, 869585, 873317, 877057, 886442

Offset

1,1

Links

Table of n, a(n) for n=1..30.

Crossrefs

Sequence in context: A199811 A230791 A087425 * A075784 A126301 A205176

Adjacent sequences: A031645 A031646 A031647 * A031649 A031650 A031651

Keyword

nonn

Author

David W. Wilson

Extensions

First term 3601 removed by Georg Fischer, Jun 16 2019

Status

approved