Numbers k such that the continued fraction for sqrt(k) has even period 2*m and the m-th term of the periodic part is 5.

A031408

Numbers k such that the continued fraction for sqrt(k) has even period 2*m and the m-th term of the periodic part is 5.

Terms

    a(0) =27a(1) =31a(2) =43a(3) =47a(4) =104a(5) =128a(6) =160a(7) =192a(8) =231a(9) =303a(10) =375a(11) =408a(12) =435a(13) =472a(14) =536a(15) =635a(16) =664a(17) =715a(18) =776a(19) =815a(20) =835a(21) =912a(22) =1115a(23) =1135a(24) =1215a(25) =1239a(26) =1267a(27) =1464a(28) =1488a(29) =1575

External references