A031655 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 67.

56218, 91285, 93106, 138505, 192013, 253234, 256261, 325189, 327473, 328618, 407405, 409961, 415097, 498877, 504541, 507385, 598058, 604258, 605813, 702869, 709589, 711274, 712961, 719729, 721426, 825193, 828829, 949517, 953417, 957325

Offset

1,1

Links

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

Crossrefs

Sequence in context: A252320 A252020 A360188 * A203964 A198165 A244294

Adjacent sequences: A031652 A031653 A031654 * A031656 A031657 A031658

Keyword

nonn

Author

David W. Wilson

Extensions

First term 4490 removed by Georg Fischer, Jun 16 2019

Status

approved