OFFSET
1,1
MATHEMATICA
cf68Q[n_]:=Module[{s=Sqrt[n], cf, len}, cf=If[IntegerQ[s], {1, 1}, ContinuedFraction[ s][[2]]]; len=Length[cf]; OddQ[len]&&cf[[(len+1)/2]] == 68]; Select[Range[1200, 112*10^4], cf68Q] (* Harvey P. Dale, Jan 27 2020 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
EXTENSIONS
First term 4625 removed by Georg Fischer, Jun 16 2019
Definition modified by Harvey P. Dale, Jan 27 2020
STATUS
approved