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A064897 Period of continued fraction for sqrt(15)*n. 0
2, 4, 8, 2, 10, 8, 2, 2, 4, 20, 10, 8, 12, 8, 26, 4, 14, 8, 22, 16, 2, 12, 18, 8, 42, 24, 12, 8, 26, 48, 2, 8, 26, 10, 26, 8, 28, 14, 32, 16, 40, 8, 8, 16, 24, 18, 30, 12, 34, 88, 46, 32, 16, 20, 2, 8, 50, 52, 46, 48, 6, 2, 2, 20, 64, 52, 56, 10, 14, 40, 4, 8, 78, 64, 130, 18, 22, 64 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..78.

MATHEMATICA

With[{c=Sqrt[15]}, Table[Length[ContinuedFraction[c*n][[2]]], {n, 80}]] (* Harvey P. Dale, Apr 25 2012 *)

CROSSREFS

Sequence in context: A076232 A011032 A174660 * A167203 A263410 A344915

Adjacent sequences:  A064894 A064895 A064896 * A064898 A064899 A064900

KEYWORD

nonn

AUTHOR

R. K. Guy, Oct 26, 2001

STATUS

approved

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Last modified June 22 14:22 EDT 2021. Contains 345380 sequences. (Running on oeis4.)