A051982 Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 17.

1018, 1994, 2965, 4285, 5354, 5498, 5585, 8917, 9242, 9665, 10265, 12085, 13061, 13957, 14677, 15242, 15613, 16109, 16565, 16613, 17173, 17285, 17429, 17861, 18037, 18737, 18965, 34047, 34957, 35285, 36413, 37949, 40085, 40501, 41165, 47813, 48149, 50357, 53285, 57797, 58853, 61133, 62957, 63653, 86957, 146453

Offset: 1

Author

N. J. A. Sloane, Jan 04 2000

Keywords

• nonn
• fini
• full

Comments

The article in 1992 had a(28)=34037. Georg Fischer, Sep 21 2021

References

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

Links

• R. A. Mollin and H. C. Williams, On real quadratic fields of class number two, Mathematics of Computation, Vol. 59, No. 200, Oct. 1992, pp. 625-632.

Crossrefs

Cf. A051966-A051989.

Extensions

a(36) and following from Georg Fischer, Sep 21 2021