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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. 0
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

CROSSREFS

Sequence in context: A230336 A252320 A252020 * 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

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Last modified November 28 20:13 EST 2022. Contains 358421 sequences. (Running on oeis4.)