A374551 Number of length n inversion sequences avoiding the patterns 101 and 120.
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
Keywords
Links
- Benjamin Testart, Table of n, a(n) for n = 0..250
- Benjamin Testart, Completing the enumeration of inversion sequences avoiding one or two patterns of length 3, arXiv:2407.07701 [math.CO], 2024.