login
A031794
Period of continued fraction for sqrt(n) contains exactly 26 ones.
0
886, 919, 1006, 1039, 1141, 1153, 1291, 1471, 1699, 1801, 1837, 1951, 2131, 2167, 2239, 2347, 2449, 2539, 2692, 2977, 3011, 3189, 3457, 3499, 3546, 3557, 3561, 3693, 3727, 3742, 3789, 3793, 3911, 3929, 3991, 4197, 4273, 4306, 4351, 4426, 4526, 4529
OFFSET
1,1
MATHEMATICA
cf26Q[n_]:=Module[{s=Sqrt[n]}, If[IntegerQ[s], 1, Count[ContinuedFraction[s][[2]], 1]]==26]; Select[Range[4600], cf26Q] (* Harvey P. Dale, Aug 14 2018 *)
CROSSREFS
Sequence in context: A318200 A295443 A261760 * A020393 A103811 A190354
KEYWORD
nonn
STATUS
approved