A031562 - OEIS

%I #12 Jul 06 2024 16:07:31

%S 4098,4126,4146,4162,4166,4174,4178,4182,4194,4198,4222,4246,4258,

%T 4262,4286,4294,4322,4354,9219,9237,9249,9294,9321,9327,9357,9399,

%U 9417,9438,9444,9489,9501,9507,9543,9561,9573,9579,9582,9609,9633,9687,9723,9726

%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 64.

%K nonn

%O 1,1

%A _David W. Wilson_