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A031510 Numbers n such that continued fraction for sqrt(n) has even period and central term 12. 0
146, 158, 162, 166, 178, 194, 327, 366, 372, 381, 393, 417, 429, 438, 580, 596, 604, 628, 636, 652, 668, 684, 692, 700, 716, 724, 740, 748, 764, 772, 780, 905, 945, 955, 995, 1005, 1030, 1055, 1070, 1195, 1205, 1220, 1302, 1338, 1434, 1578, 1614, 1626, 1758 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..49.

CROSSREFS

Sequence in context: A015055 A166071 A124969 * A145915 A135666 A119379

Adjacent sequences:  A031507 A031508 A031509 * A031511 A031512 A031513

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified October 2 02:22 EDT 2014. Contains 247527 sequences.