A020354 - OEIS

%I #10 Jul 10 2021 19:33:40

%S 109,353,461,617,685,709,877,1066,1097,1241,1466,1553,1877,2290,2545,

%T 2713,2738,2858,3077,3314,3562,3653,4498,4538,4570,4573,5365,5557,

%U 5578,5906,6409,6682,7082,7085,7090,7481,7825,8005,8381,8794,8945,9049,9389

%N Numbers k such that the continued fraction for sqrt(k) has period 15.

%K nonn

%O 1,1

%A _David W. Wilson_