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.

Showing 1-3 of 3 results.

A260990 Numbers n such that the modular curve X_0(n) is bielliptic.

Original entry on oeis.org

22, 26, 28, 30, 33, 34, 35, 37, 38, 39, 40, 42, 43, 44, 45, 48, 50, 51, 53, 54, 55, 56, 60, 61, 62, 63, 64, 65, 69, 72, 75, 79, 81, 83, 89, 92, 94, 95, 101, 119, 131
Offset: 1

Views

Author

N. J. A. Sloane, Aug 08 2015, following a suggestion from Roger L. Bagula, Jul 22 2015

Keywords

References

  • J. S. Balakrishnan, B. Mazur, and N. Dogra, Ogg's torsion conjecture: fifty years later, Bull. Amer. Math. Soc., 62:2 (2025), 235-268.

Links

Crossrefs

Cf. A260991, A260992, A260993, A260994.

A260991 Numbers n such that the modular curve X_0(n) has a bielliptic involution of Atkin-Lehner type.

Original entry on oeis.org

22, 26, 28, 30, 33, 34, 35, 37, 38, 39, 40, 42, 43, 44, 45, 48, 50, 51, 53, 54, 55, 56, 60, 61, 62, 63, 64, 65, 69, 75, 79, 81, 83, 89, 92, 94, 95, 101, 119, 131
Offset: 1

Views

Author

N. J. A. Sloane, Aug 08 2015, following a suggestion from Roger L. Bagula, Jul 22 2015

Keywords

Links

Crossrefs

Same as A260990 except that now 72 is excluded.
Cf. A260992, A260993, A260994.

A260993 Numbers n such that the modular curve X_0(n) contains infinitely many rational points of degree 2.

Original entry on oeis.org

22, 23, 26, 28, 29, 30, 31, 33, 35, 37, 39, 40, 41, 43, 46, 47, 48, 50, 53, 59, 61, 65, 71, 79, 83, 89, 101, 131
Offset: 1

Views

Author

N. J. A. Sloane, Aug 08 2015, following a suggestion from Roger L. Bagula, Jul 22 2015

Keywords

Links

Crossrefs

Cf. A260990, A260991, A260992, A260994.
Showing 1-3 of 3 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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