OFFSET
1,1
COMMENTS
a(n) = 841n^2 + n for n < 61, but a(61) = 3031140. - Charles R Greathouse IV, Aug 04 2017
LINKS
Charles R Greathouse IV, Table of n, a(n) for n = 1..10000
MATHEMATICA
cf58Q[n_]:=Module[{s=Sqrt[n]}, If[IntegerQ[s], 1, Min[ContinuedFraction[s][[2]]]]==58]; Select[Range[900000], cf58Q] (* Harvey P. Dale, Nov 30 2014 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved