A031538 - OEIS

%I #12 Jul 06 2024 16:02:00

%S 1602,1606,1622,1634,1646,1654,1678,1686,1698,1718,1726,1734,1762,

%T 3603,3639,3669,3678,3684,3693,3711,3756,3777,3783,3801,3837,3849,

%U 3873,3891,3909,3921,3957,3966,6404,6412,6428,6436,6444,6452,6476,6484,6500,6508

%N Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 40.

%K nonn

%O 1,1

%A _David W. Wilson_