A064897 Period of continued fraction for sqrt(15)*n.

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

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