A374549 Number of length n inversion sequences avoiding the patterns 100 and 120.

1, 1, 2, 6, 22, 92, 421, 2062, 10646, 57324, 319436, 1831585, 10758458, 64513454, 393846399, 2442328993, 15356020884, 97741913382, 628994116349, 4087863691061, 26805206933158, 177198351316543, 1180073345351131, 7912190584017869, 53380776660751987

Offset

0,3

Links

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.

Crossrefs

Cf. A263778, A263780, A279559, A279564, A279570, A374544.

Sequence in context: A379329 A264868 A342290 * A342293 A342291 A001181

Adjacent sequences: A374546 A374547 A374548 * A374550 A374551 A374552

Keyword

nonn

Author

Benjamin Testart, Jul 17 2024

Status

approved