Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 56 ones.

Terms

a(0) =3436a(1) =3919a(2) =3949a(3) =4204a(4) =4309a(5) =5659a(6) =6589a(7) =6934a(8) =7351a(9) =7484a(10) =8167a(11) =8521a(12) =8677a(13) =8716a(14) =8953a(15) =9388a(16) =9502a(17) =9697a(18) =9967a(19) =10111a(20) =10124a(21) =10214a(22) =10558a(23) =10627a(24) =10723a(25) =10828a(26) =11533a(27) =11636a(28) =11653a(29) =12091