A374543 Number of length n inversion sequences avoiding the patterns 000 and 201 (or 000 and 210).

1, 1, 2, 5, 16, 60, 257, 1218, 6270, 34530, 201223, 1230168, 7836622, 51738649, 352457285, 2468427794, 17718840472, 130027678901, 973357030743, 7418717413322, 57477823445999, 452035218046890, 3604179615488962, 29102380883498470, 237748924887335003

Offset

0,3

Links

Benjamin Testart, Table of n, a(n) for n = 0..750

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

Crossrefs

Cf. A279555.

Sequence in context: A301306 A352617 A332930 * A000764 A205486 A210668

Adjacent sequences: A374540 A374541 A374542 * A374544 A374545 A374546

Keyword

nonn

Author

Benjamin Testart, Jul 12 2024

Status

approved