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A374551
Number of length n inversion sequences avoiding the patterns 101 and 120.
1
1, 1, 2, 6, 22, 90, 397, 1859, 9145, 46882, 248899, 1361845, 7650233, 43990073, 258287170, 1545382674, 9406108839, 58155261970, 364774287298, 2318661708634, 14921368078303, 97132997631387, 639118975577638, 4247742637567555, 28499086448886207
OFFSET
0,3
CROSSREFS
KEYWORD
nonn
AUTHOR
Benjamin Testart, Jul 17 2024
STATUS
approved