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A031653 Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 65. 0

%I #12 Aug 18 2021 00:10:32

%S 9613,26921,87697,128285,131165,238369,243274,244261,308314,310538,

%T 311653,313889,382285,479305,566033,573578,661594,666481,671386,

%U 674666,676309,677954,775129,895757,903341,907145,910957,914777,1023082,1029157

%N Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 65.

%K nonn

%O 1,1

%A _David W. Wilson_

%E First term 4226 removed by _Georg Fischer_, Jun 16 2019

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Last modified February 25 06:40 EST 2024. Contains 370310 sequences. (Running on oeis4.)