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.

A337651 Volume of the signed Birkhoff polytope BB(n).

Original entry on oeis.org

2, 64, 328704, 790708092928, 1794509410020706222080
Offset: 1

Views

Author

N. J. A. Sloane, Sep 26 2020

Keywords

Links

  • Florian Kohl, McCabe Olsen, and Raman Sanyal, Unconditional reflexive polytopes, arXiv:1906.01469 [math.CO], 2019. Also Discrete and Computational Geom., 64:2 (2020), 427-452.

Crossrefs

Cf. A337650, A337652, A337653.

Formula

a(n) = A337650(n) * 2^(n^2). - Andrei Zabolotskii, Jul 24 2025

Extensions

a(5) from Andrei Zabolotskii, Jul 24 2025

A337652 Volume of the positive dual signed Birkhoff polytope C_{+}(n).

Original entry on oeis.org

1, 6, 642, 2389248, 506289991680
Offset: 1

Views

Author

N. J. A. Sloane, Sep 26 2020

Keywords

Links

  • Florian Kohl, McCabe Olsen, and Raman Sanyal, Unconditional reflexive polytopes, arXiv:1906.01469 [math.CO], 2019. Also Discrete and Computational Geom., 64:2 (2020), 427-452.

Crossrefs

Cf. A337650, A337651, A337653.

A337653 Volume of the dual signed Birkhoff polytope C(n).

Original entry on oeis.org

2, 96, 328704, 156581756928, 16988273098107125760
Offset: 1

Views

Author

N. J. A. Sloane, Sep 26 2020

Keywords

Links

  • Florian Kohl, McCabe Olsen, and Raman Sanyal, Unconditional reflexive polytopes, arXiv:1906.01469 [math.CO], 2019. Also Discrete and Computational Geom., 64:2 (2020), 427-452.

Crossrefs

Cf. A337650, A337651, A337652.

Formula

a(n) = A337652(n) * 2^(n^2). - Andrei Zabolotskii, Jul 24 2025
Showing 1-3 of 3 results.

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

Content is available under The OEIS End-User License Agreement.