OFFSET
1,1
MATHEMATICA
cf78Q[n_]:=Module[{s=Sqrt[n], len, cf}, cf=If[IntegerQ[s], {1, 1}, ContinuedFraction[s][[2]]]; len= Length[ cf]; OddQ[len]&&cf[[Floor[len/2]]]==cf[[Ceiling[len/2]]]==78]; Select[Range[ 1480000], cf78Q] (* Harvey P. Dale, Dec 16 2023 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
EXTENSIONS
First term 6085 removed by Georg Fischer, Jun 16 2019
STATUS
approved