A374548 Number of length n inversion sequences avoiding the patterns 011 and 120.

1, 1, 2, 5, 14, 42, 132, 431, 1452, 5026, 17808, 64398, 237097, 886935, 3365348, 12933691, 50285912, 197586405, 783922944, 3138088910, 12666148475, 51517864816, 211047556685, 870385025022, 3612193740355, 15079839929453, 63305470339527, 267159465034792

Offset

0,3

Links

Benjamin Testart, Table of n, a(n) for n = 0..430

Benjamin Testart, Completing the enumeration of inversion sequences avoiding one or two patterns of length 3, arXiv:2407.07701 [math.CO], 2024.

Crossrefs

Cf. A000110, A263778, A279555, A279559, A279570.

Sequence in context: A125501 A126569 A162748 * A061815 A340361 A308329

Adjacent sequences: A374545 A374546 A374547 * A374549 A374550 A374551

Keyword

nonn

Author

Benjamin Testart, Jul 13 2024

Status

approved