A289430 Sum of factorial-Catalan numbers over a certain family of decorations.

1, 3, 18, 135, 1134, 10287, 99306, 1014039, 10933542

Offset

0,2

Comments

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

Links

Table of n, a(n) for n=0..8.

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

Crossrefs

Cf. A289427, A289428, A289429, A289431.

Sequence in context: A005159 A151383 A177406 * A247452 A371416 A376224

Adjacent sequences: A289427 A289428 A289429 * A289431 A289432 A289433

Keyword

nonn,more

Author

N. J. A. Sloane, Jul 06 2017

Status

approved