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A065006 Integers for which the periodic part of the continued fraction for the square root of n begins with 3. 0
11, 28, 40, 53, 69, 86, 87, 106, 127, 128, 151, 152, 176, 177, 204, 205, 233, 234, 235, 265, 266, 298, 299, 300, 334, 335, 336, 371, 372, 373, 411, 412, 413, 452, 453, 454, 455, 496, 497, 498, 541, 542, 543, 544, 589, 590, 591, 592, 638, 639, 640, 641, 690 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..53.

EXAMPLE

The continued fraction for the square root of 11 is 3, {3, 6}.

MATHEMATICA

Select[ Range[800], First[ Last[ ContinuedFraction[ Sqrt[ # ]]]] == 3 & ]

CROSSREFS

Sequence in context: A137019 A122929 A030756 * A291058 A061952 A336335

Adjacent sequences:  A065003 A065004 A065005 * A065007 A065008 A065009

KEYWORD

cofr,easy,nonn

AUTHOR

Robert G. Wilson v, Nov 01 2001

STATUS

approved

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Last modified October 27 18:34 EDT 2020. Contains 338035 sequences. (Running on oeis4.)