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A031731
Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 53.
1
2811, 11240, 25287, 44952, 70235, 101136, 137655, 179792, 227547, 280920, 339911, 404520, 474747, 550592, 632055, 719136, 811835, 910152, 1014087, 1123640, 1238811, 1359600, 1486007, 1618032, 1755675, 1898936, 2047815, 2202312, 2362427
OFFSET
1,1
LINKS
Charles R Greathouse IV, Table of n, a(n) for n = 1..10000
MATHEMATICA
cf53Q[n_]:=Module[{s=Sqrt[n]}, If[IntegerQ[s], 1, Min[ContinuedFraction[s][[2]]]] == 53]; Select[Range[237*10^4], cf53Q] (* Harvey P. Dale, Feb 11 2022 *)
CROSSREFS
Sequence in context: A022233 A102170 A031551 * A252048 A254254 A254261
KEYWORD
nonn
STATUS
approved