A374548 -id:A374548 - cp's OEIS frontend

A374550 Number of length n inversion sequences avoiding the patterns 120 and 201.

1, 1, 2, 6, 23, 102, 498, 2607, 14386, 82663, 490228, 2981407, 18507513, 116855873, 748427848, 4851982365, 31784721142, 210111119681, 1399977460914, 9393523464391, 63420812374620, 430570197000992, 2937789342516835, 20135022976572246, 138566149670814993

Offset: 0

Benjamin Testart, Jul 17 2024

nonn

Benjamin Testart, Table of n, a(n) for n = 0..350
Benjamin Testart, Completing the enumeration of inversion sequences avoiding one or two patterns of length 3, arXiv:2407.07701 [math.CO], 2024.

Cf. A263777, A263778, A279559, A279566, A279570, A360052, A374546, A374548.

A374551 Number of length n inversion sequences avoiding the patterns 101 and 120.

Original entry on oeis.org

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

Benjamin Testart, Jul 17 2024

nonn

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.

Cf. A113227, A263778, A374545, A374547, A374548.

cp's OEIS Frontend

A374550 Number of length n inversion sequences avoiding the patterns 120 and 201.

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