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%I #9 Mar 21 2021 21:20:53
%S 1,1,2,6,21,73,215,484,669,334
%N Number of permutations of [n] avoiding {4321, 1324, 1234}.
%H D. Callan, T. Mansour, <a href="http://arxiv.org/abs/1705.00933">Enumeration of small Wilf classes avoiding 1324 and two other 4-letter patterns</a>, arXiv:1705.00933 [math.CO] (2017), Table 2 No 59.
%K nonn,easy,fini,full
%O 0,3
%A _R. J. Mathar_, Nov 08 2017