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A338725 Number of matchings avoiding a certain pattern (see Cervetti-Ferrari, Cor. 3.1(ii)). 1
1, 3, 15, 105, 944, 10341, 133132, 1961919, 32441303, 592718236 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
Matteo Cervetti and Luca Ferrari, Pattern avoidance in the matching pattern poset, arXiv:2009.01024 [math.CO], 2020.
CROSSREFS
Cf. A338724.
Sequence in context: A189919 A360579 A251598 * A295871 A293997 A328866
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Nov 30 2020
STATUS
approved

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Last modified May 23 18:59 EDT 2024. Contains 372765 sequences. (Running on oeis4.)