%I A065006
%S A065006 11,28,40,53,69,86,87,106,127,128,151,152,176,177,204,205,233,234,235,
%T A065006 265,266,298,299,300,334,335,336,371,372,373,411,412,413,452,453,454,
%U A065006 455,496,497,498,541,542,543,544,589,590,591,592,638,639,640,641,690
%N A065006 Integers for which the periodic part of the continued fraction for the 
               square root of n begins with 3.
%e A065006 The continued fraction for the square root of 11 is 3, {3, 6}.
%t A065006 Select[ Range[800], First[ Last[ ContinuedFraction[ Sqrt[ # ]]]] == 3 
               & ]
%Y A065006 Sequence in context: A137019 A122929 A030756 this_sequence A061952 A140677 
               A018944
%Y A065006 Adjacent sequences: A065003 A065004 A065005 this_sequence A065007 A065008 
               A065009
%K A065006 cofr,easy,nonn
%O A065006 1,1
%A A065006 Robert G. Wilson v (rgwv(AT)rgwv.com), Nov 01 2001