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A031686 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 98. 0
119074, 196330, 198106, 291721, 293885, 296057, 407213, 409769, 412333, 550789, 697514, 700858, 1069597, 1272913, 1277429, 1284218, 1503701, 1506154, 1508609, 1511066, 1518449, 1523381, 1528321, 1530794, 1764313, 2022925, 2028617 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..27.

CROSSREFS

Sequence in context: A253874 A253540 A157736 * A262510 A262509 A263083

Adjacent sequences:  A031683 A031684 A031685 * A031687 A031688 A031689

KEYWORD

nonn

AUTHOR

David W. Wilson

EXTENSIONS

First term 9605 removed by Georg Fischer, Jun 16 2019

STATUS

approved

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Last modified August 8 09:40 EDT 2022. Contains 356009 sequences. (Running on oeis4.)