A064913 Period of continued fraction for sqrt(19)*n.

6, 12, 2, 12, 10, 8, 22, 20, 10, 10, 12, 8, 4, 12, 12, 40, 6, 28, 90, 10, 24, 28, 22, 24, 46, 4, 46, 12, 72, 8, 8, 72, 14, 6, 20, 24, 92, 172, 2, 12, 94, 20, 50, 28, 24, 18, 130, 32, 134, 38, 6, 8, 140, 84, 32, 16, 102, 152, 130, 8, 134, 24, 60, 160, 4, 24, 146, 6, 18, 12, 172

Offset

1,1

Links

Table of n, a(n) for n=1..71.

Mathematica

Table[Length[ContinuedFraction[n Sqrt[19]][[2]]], {n, 80}] (* Harvey P. Dale, Sep 21 2019 *)

Crossrefs

Sequence in context: A242931 A341828 A110645 * A066401 A335413 A356119

Adjacent sequences: A064910 A064911 A064912 * A064914 A064915 A064916

Keyword

nonn

Author

R. K. Guy, Oct 26, 2001

Status

approved