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A289587
Related to number of mesh patterns of length 2 that avoid the pattern 321.
0
1, 1, 1, 3, 6, 18, 47, 139, 405, 1225, 3740
OFFSET
1,4
LINKS
Murray Tannock, Equivalence classes of mesh patterns with a dominating pattern, MSc Thesis, Reykjavik Univ., May 2016. See Appendix B2.
CROSSREFS
Sequence in context: A115344 A223044 A317078 * A151262 A148555 A148556
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Jul 08 2017
STATUS
approved