A051980 Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 15.

481, 1417, 1466, 2858, 3065, 3589, 3785, 3977, 4538, 5317, 5941, 6641, 6749, 7082, 11861, 12701, 12833, 13793, 14909, 16589, 17153, 18185, 18365, 18581, 20885, 24221, 27989, 29069, 32885, 33365, 44813, 47165, 51173, 66197, 67973, 70493, 78917

Offset

1,1

References

R. A. Mollin, Quadratics, CRC Press, 1996, Appendix A, Table A3.

Links

Table of n, a(n) for n=1..37.

Crossrefs

Cf. A051966-A051989.

Sequence in context: A317174 A020286 A064909 * A020271 A290338 A365657

Adjacent sequences: A051977 A051978 A051979 * A051981 A051982 A051983

Keyword

nonn,fini,full

Author

N. J. A. Sloane, Jan 04 2000

Extensions

a(16)=24221 and a(37) inserted by Georg Fischer, Sep 21 2021

Status

approved