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.

A289429 Sum of factorial-Catalan numbers over a certain family of decorations.

Original entry on oeis.org

1, 3, 18, 126, 936, 7164, 55800, 439560, 3489696
Offset: 0

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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. A289427, A289428, A289430, A289431.

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

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