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A031699 Least term in period of continued fraction for sqrt(n) is 21. 1
443, 1768, 3975, 7064, 11035, 15888, 21623, 28240, 35739, 44120, 53383, 63528, 74555, 86464, 99255, 112928, 127483, 142920, 159239, 176440, 194523, 204347, 213488, 224719, 233335, 254064, 275675, 298168, 321543, 345800, 370939, 396960 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Charles R Greathouse IV, Table of n, a(n) for n = 1..10000

MATHEMATICA

Select[Range[400000], !IntegerQ[Sqrt[#]]&&Min[ContinuedFraction[Sqrt[#]][[2]]]==21&] (* Vincenzo Librandi, Jan 27 2012 *)

CROSSREFS

Sequence in context: A171392 A105980 A031519 * A158321 A293978 A205604

Adjacent sequences:  A031696 A031697 A031698 * A031700 A031701 A031702

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified November 20 04:05 EST 2017. Contains 294959 sequences.