%I #7 Mar 28 2014 02:25:41
%S 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,
%T 26,48,2,8,26,10,26,8,28,14,32,16,40,8,8,16,24,18,30,12,34,88,46,32,
%U 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
%N Period of continued fraction for sqrt(15)*n.
%t With[{c=Sqrt[15]},Table[Length[ContinuedFraction[c*n][[2]]],{n,80}]] (* _Harvey P. Dale_, Apr 25 2012 *)
%K nonn
%O 1,1
%A _R. K. Guy_, Oct 26, 2001
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