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A031583 that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 85. 0
7227, 7243, 7247, 7251, 7283, 7299, 7307, 7323, 7327, 7331, 7339, 7343, 7351, 7387, 7399, 7403, 7411, 7443, 7451, 7459, 7463, 7467, 7471, 7487, 7491, 7499, 7507, 7519, 7523, 7547, 7559, 7567, 28904, 28960, 28992, 29000, 29024, 29056, 29088, 29096 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..40.

CROSSREFS

Sequence in context: A346594 A202402 A206469 * A031763 A272160 A093224

Adjacent sequences:  A031580 A031581 A031582 * A031584 A031585 A031586

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified January 18 13:38 EST 2022. Contains 350455 sequences. (Running on oeis4.)