A051977 Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 12.

247, 295, 355, 366, 385, 386, 426, 535, 609, 767, 802, 815, 851, 969, 995, 1027, 1113, 1162, 1207, 1343, 1353, 1355, 1358, 1535, 1538, 1703, 1717, 1799, 1910, 1946, 2018, 2047, 2054, 2105, 2231, 2318, 2327, 2334, 2365, 2438, 2507, 2735

Offset: 1

Author

N. J. A. Sloane, Jan 04 2000

Keywords

• nonn
• fini
• full

References

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

Links

• Georg Fischer, Table of n, a(n) for n = 1..102

Crossrefs

Cf. A051966-A051989.