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A065008 Integers for which the periodic part of the continued fraction for the square root of n begins with 5. 0
27, 67, 104, 125, 174, 201, 231, 262, 295, 331, 368, 407, 408, 449, 492, 537, 538, 585, 634, 635, 685, 686, 739, 794, 795, 851, 852, 911, 912, 972, 973, 1035, 1036, 1101, 1102, 1168, 1169, 1237, 1238, 1239, 1309, 1310, 1382, 1383, 1457, 1458, 1459 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..47.

EXAMPLE

The continued fraction for the square root of 104 is 10, {5, 20}.

MATHEMATICA

Select[ Range[1500], First[ Last[ ContinuedFraction[ Sqrt[ # ]]]] == 5 & ]

CROSSREFS

Sequence in context: A106200 A303972 A099865 * A250134 A116353 A224525

Adjacent sequences:  A065005 A065006 A065007 * A065009 A065010 A065011

KEYWORD

cofr,easy,nonn

AUTHOR

Robert G. Wilson v, Nov 01 2001

STATUS

approved

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Last modified October 23 02:26 EDT 2020. Contains 337962 sequences. (Running on oeis4.)