OFFSET
1,1
MATHEMATICA
cf49Q[n_]:=Module[{s=Sqrt[n]}, If[IntegerQ[s], 1, Length[ ContinuedFraction[ s] [[2]]]]==49]; Select[Range[31000], cf49Q] (* Harvey P. Dale, Mar 31 2018 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved