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Number of length n inversion sequences avoiding the patterns 110 and 201.
2

%I #6 Jul 13 2024 20:27:17

%S 1,1,2,6,23,103,512,2739,15464,90964,552570,3444473,21930271,

%T 142105583,934612523,6225356918,41923198109,285028459807,

%U 1954160675724,13497387857456,93843199637004,656325719024695,4614695142311098,32602630763193546,231343227544240096

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

%H Benjamin Testart, <a href="/A374546/b374546.txt">Table of n, a(n) for n = 0..850</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, A279570, A360052, A374543.

%K nonn

%O 0,3

%A _Benjamin Testart_, Jul 13 2024