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.

A289427 Sum of factorial-Catalan numbers over a certain family of decorations.

Original entry on oeis.org

1, 4, 32, 320, 3584, 43264, 553472, 7441920, 104740864
Offset: 0

Views

Author

N. J. A. Sloane, Jul 06 2017

Keywords

Comments

The precise definition involves the use of certain symbols akin to the peace symbol.

Links

  • Vincent Pilaud, V. Pons, Permutrees, arXiv preprint arXiv:1606.09643 [math.CO], 2016.

Crossrefs

Cf. A289428, A289429, A289430, A289431.

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

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