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A020419 Numbers n such that continued fraction for sqrt(n) has period 80. 0

%I

%S 1759,1981,2206,2764,2989,3559,3628,3694,3817,3868,3921,4041,4333,

%T 5006,5293,5294,5407,5647,5877,6193,6281,6718,6847,6892,7660,8039,

%U 8137,8359,8561,8596,9487,9788,9989,10014,10495,10579,10697,10737,10882,11006

%N Numbers n such that continued fraction for sqrt(n) has period 80.

%t Select[Range[2000], Length[ContinuedFraction[Sqrt[#]][[2]]] == 80 &] (* _Alonso del Arte_, Jun 23 2018 *)

%K nonn

%O 1,1

%A _David W. Wilson_

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Last modified August 24 13:48 EDT 2019. Contains 326279 sequences. (Running on oeis4.)