A065013 - OEIS

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A065013

Integers for which the periodic part of the continued fraction for the square root of n begins with 10.

1

26, 102, 228, 259, 404, 445, 630, 681, 734, 906, 967, 1030, 1232, 1303, 1376, 1451, 1608, 1689, 1772, 1857, 2034, 2125, 2218, 2313, 2410, 2510, 2611, 2714, 2819, 2926, 3036, 3147, 3260, 3375, 3492, 3611, 3612, 3733, 3856, 3981, 4108, 4237, 4238, 4369

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..44.

EXAMPLE

The continued fraction for the square root of 102 is 10, {10, 20}.

MATHEMATICA

Select[ Range[5000], First[ Last[ ContinuedFraction[ Sqrt[ # ]]]] == 10 & ]

CROSSREFS

Sequence in context: A144129 A026915 A136293 * A031434 A173089 A333055

Adjacent sequences: A065010 A065011 A065012 * A065014 A065015 A065016

KEYWORD

easy,nonn

AUTHOR

Robert G. Wilson v, Nov 01 2001

STATUS

approved