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 40.
A031538
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 40.
Terms
- a(0) =1602a(1) =1606a(2) =1622a(3) =1634a(4) =1646a(5) =1654a(6) =1678a(7) =1686a(8) =1698a(9) =1718a(10) =1726a(11) =1734a(12) =1762a(13) =3603a(14) =3639a(15) =3669a(16) =3678a(17) =3684a(18) =3693a(19) =3711a(20) =3756a(21) =3777a(22) =3783a(23) =3801a(24) =3837a(25) =3849a(26) =3873a(27) =3891a(28) =3909a(29) =3921
External references
- oeis: A031538