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A289429 Sum of factorial-Catalan numbers over a certain family of decorations. 4
1, 3, 18, 126, 936, 7164, 55800, 439560, 3489696 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
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
Sequence in context: A365130 A349024 A176277 * A004987 A340894 A363560
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Jul 06 2017
STATUS
approved

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Last modified May 30 04:46 EDT 2024. Contains 372958 sequences. (Running on oeis4.)