The least number s having exactly n threes in the continued fraction of sqrt(s).

Terms

a(0) =2a(1) =11a(2) =28a(3) =335a(4) =69a(5) =1507a(6) =268a(7) =1963a(8) =589a(9) =7675a(10) =1318a(11) =2899a(12) =1549a(13) =11575a(14) =1789a(15) =17371a(16) =3331a(17) =22459a(18) =3319a(19) =23791a(20) =6211a(21) =18019a(22) =6379a(23) =63379a(24) =6694a(25) =17131a(26) =9199a(27) =75331a(28) =10189a(29) =49471