Numbers k such that the continued fraction for sqrt(k) has period 3.

Terms

a(0) =41a(1) =130a(2) =269a(3) =370a(4) =458a(5) =697a(6) =986a(7) =1313a(8) =1325a(9) =1613a(10) =1714a(11) =2153a(12) =2642a(13) =2834a(14) =3181a(15) =3770a(16) =4409a(17) =4778a(18) =4933a(19) =5098a(20) =5837a(21) =5954a(22) =6626a(23) =7465a(24) =7610a(25) =8354a(26) =9293a(27) =10282a(28) =10865a(29) =11257