A374546 Number of length n inversion sequences avoiding the patterns 110 and 201.

1, 1, 2, 6, 23, 103, 512, 2739, 15464, 90964, 552570, 3444473, 21930271, 142105583, 934612523, 6225356918, 41923198109, 285028459807, 1954160675724, 13497387857456, 93843199637004, 656325719024695, 4614695142311098, 32602630763193546, 231343227544240096

Offset

0,3

Links

Benjamin Testart, Table of n, a(n) for n = 0..850

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

Crossrefs

Cf. A113227, A263777, A279570, A360052, A374543.

Sequence in context: A238639 A226995 A301897 * A022558 A004040 A216040

Adjacent sequences: A374543 A374544 A374545 * A374547 A374548 A374549

Keyword

nonn

Author

Benjamin Testart, Jul 13 2024

Status

approved