login
Number of length n inversion sequences avoiding the patterns 101 and 210.
2

%I #6 Jul 13 2024 19:39:03

%S 1,1,2,6,23,103,513,2763,15816,95109,595873,3865396,25837360,

%T 177275162,1244621410,8918587896,65085848546,482852672433,

%U 3635811839722,27749901618649,214430320809516,1675833302839457,13234389150662469,105525920568921495,848962775349348810

%N Number of length n inversion sequences avoiding the patterns 101 and 210.

%H Benjamin Testart, <a href="/A374547/b374547.txt">Table of n, a(n) for n = 0..800</a>

%H Benjamin Testart, <a href="https://arxiv.org/abs/2407.07701">Completing the enumeration of inversion sequences avoiding one or two patterns of length 3</a>, arXiv:2407.07701 [math.CO], 2024.

%Y Cf. A113227, A263777, A360052, A374542, A374543.

%K nonn

%O 0,3

%A _Benjamin Testart_, Jul 13 2024