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Number of length n inversion sequences avoiding the patterns 011 and 120.
3

%I #6 Jul 13 2024 20:27:47

%S 1,1,2,5,14,42,132,431,1452,5026,17808,64398,237097,886935,3365348,

%T 12933691,50285912,197586405,783922944,3138088910,12666148475,

%U 51517864816,211047556685,870385025022,3612193740355,15079839929453,63305470339527,267159465034792

%N Number of length n inversion sequences avoiding the patterns 011 and 120.

%H Benjamin Testart, <a href="/A374548/b374548.txt">Table of n, a(n) for n = 0..430</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. A000110, A263778, A279555, A279559, A279570.

%K nonn

%O 0,3

%A _Benjamin Testart_, Jul 13 2024