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A031703 Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 25. 1
627, 2504, 5631, 10008, 15635, 22512, 30639, 40016, 50643, 62520, 75647, 90024, 105651, 122528, 140655, 160032, 180659, 202536, 225663, 250040, 275667, 302544, 330671, 360048, 390675, 407095, 422552, 440947, 455679, 490056, 525683, 562560 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Charles R Greathouse IV, Table of n, a(n) for n = 1..10000
MATHEMATICA
cf25Q[n_]:=Module[{s=Sqrt[n]}, If[IntegerQ[s], 1, Min[ContinuedFraction[s][[2]]]]==25]; Select[Range[600000], cf25Q] (* Harvey P. Dale, Mar 05 2018 *)
CROSSREFS
Sequence in context: A345523 A345777 A129974 * A158382 A188362 A098260
KEYWORD
nonn
AUTHOR
STATUS
approved

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Last modified March 28 14:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)