OFFSET
1,1
MATHEMATICA
cf16Q[n_]:=Module[{s=Sqrt[n], cf, len}, cf=If[IntegerQ[s], {1}, ContinuedFraction[ s][[2]]]; len=Length[cf]; EvenQ[len] && cf[[len/2]] == 16]; Select[Range[2000], cf16Q] (* Harvey P. Dale, Mar 04 2018 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved