# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a031653 Showing 1-1 of 1 %I A031653 #12 Aug 18 2021 00:10:32 %S A031653 9613,26921,87697,128285,131165,238369,243274,244261,308314,310538, %T A031653 311653,313889,382285,479305,566033,573578,661594,666481,671386, %U A031653 674666,676309,677954,775129,895757,903341,907145,910957,914777,1023082,1029157 %N 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. %K A031653 nonn %O A031653 1,1 %A A031653 _David W. Wilson_ %E A031653 First term 4226 removed by _Georg Fischer_, Jun 16 2019 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE