cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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

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%I A374543 #7 Jul 12 2024 11:25:35
%S A374543 1,1,2,5,16,60,257,1218,6270,34530,201223,1230168,7836622,51738649,
%T A374543 352457285,2468427794,17718840472,130027678901,973357030743,
%U A374543 7418717413322,57477823445999,452035218046890,3604179615488962,29102380883498470,237748924887335003
%N A374543 Number of length n inversion sequences avoiding the patterns 000 and 201 (or 000 and 210).
%H A374543 Benjamin Testart, <a href="/A374543/b374543.txt">Table of n, a(n) for n = 0..750</a>
%H A374543 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 A374543 Cf. A279555.
%K A374543 nonn
%O A374543 0,3
%A A374543 _Benjamin Testart_, Jul 12 2024