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A289589
Related to number of mesh patterns of length 2 that avoid the pattern 321.
0
1, 1, 1, 2, 5, 15, 48, 159, 538, 1850, 6446
OFFSET
1,4
LINKS
Shishuo Fu, Guo-Niu Han, and Zhicong Lin, k-arrangements, statistics and patterns, arXiv:2005.06354 [math.CO], 2020. Mentions this sequence.
Murray Tannock, Equivalence classes of mesh patterns with a dominating pattern, MSc Thesis, Reykjavik Univ., May 2016. See Appendix B2.
CROSSREFS
Sequence in context: A149926 A321467 A301994 * A071739 A268407 A261003
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Jul 08 2017
STATUS
approved