cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A050950 Discriminants of real quadratic fields with class number 1 and related continued fraction period length of 1.

Original entry on oeis.org

2, 5, 13, 29, 53, 173, 293
Offset: 1

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Author

N. J. A. Sloane, Jan 04 2000

Keywords

Comments

Theorem 3.1 of Lachaud (1987) says that under Hypothesis(H), which is a version of the Generalized Riemann Hypothesis, the only real quadratic fields with caliber one are the fields Q(sqrt(t)) where t is one of the seven numbers listed here. - N. J. A. Sloane, Aug 28 2021

References

  • Gilles Lachaud, On real quadratic fields, Bull. Amer. Math. Soc., 17:2 (1987), 307-311.
  • R. A. Mollin, Quadratics, CRC Press, 1996, Appendix A.

Crossrefs