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A031429 Least term in period of continued fraction for sqrt(n) is 5. 1
27, 104, 231, 408, 635, 795, 912, 1167, 1239, 1616, 1866, 2043, 2134, 2520, 2621, 3047, 3158, 3387, 3504, 3624, 4251, 4515, 4927, 4928, 5358, 5655, 6432, 7259, 7779, 8136, 9062, 9063, 9833, 9840, 10040, 10241, 10650, 11067, 11491, 12144 (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 (first 300 terms from Vincenzo Librandi)

MATHEMATICA

Select[Range[15000], !IntegerQ[Sqrt[#]] && Min[ContinuedFraction[Sqrt[#]][[2]]] == 5&] (* Vincenzo Librandi, Feb 07 2012 *)

CROSSREFS

Sequence in context: A010015 A256646 A323034 * A154377 A232283 A036923

Adjacent sequences:  A031426 A031427 A031428 * A031430 A031431 A031432

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified May 11 13:41 EDT 2021. Contains 343791 sequences. (Running on oeis4.)