Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 41.

A031539

Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 41.

Terms

    a(0) =1683a(1) =1687a(2) =1691a(3) =1699a(4) =1707a(5) =1723a(6) =1747a(7) =1759a(8) =1779a(9) =1783a(10) =1787a(11) =1799a(12) =1811a(13) =1819a(14) =1823a(15) =1831a(16) =1843a(17) =1847a(18) =6728a(19) =6752a(20) =6784a(21) =6824a(22) =6848a(23) =6856a(24) =6880a(25) =6912a(26) =6920a(27) =6944a(28) =6976a(29) =7008

External references