A360052 Number of length n inversion sequences avoiding the patterns 010 and 201 (or 010 and 210).

1, 1, 2, 5, 15, 53, 214, 958, 4650, 24103, 131974, 757011, 4519321, 27933252, 177987808, 1165057411, 7811122974, 53506838952, 373693431140, 2656088059747, 19182588092365, 140577110057850, 1044102585724522, 7851149068600037, 59714190403840142, 459001044591439621

Offset

0,3

Links

Table of n, a(n) for n=0..25.

Benjamin Testart, Inversion sequences avoiding the pattern 010, arXiv:2212.07222 [math.CO], 2022. See Table 2 p. 2.

Chunyan Yan and Zhicong Lin, Inversion sequences avoiding pairs of patterns, arXiv:1912.03674 [math.CO], 2019.

Crossrefs

Cf. A263779, A263777.

Sequence in context: A352853 A006790 A007548 * A328431 A120567 A263779

Adjacent sequences: A360049 A360050 A360051 * A360053 A360054 A360055

Keyword

nonn

Author

Benjamin Testart, Jan 23 2023

Status

approved