%I #11 Mar 09 2020 05:40:40
%S 0,0,0,0,8,42,178,664,2288
%N Number of separable permutations with exactly four occurrences of the 1-box pattern.
%C See Kitaev-Remmel for precise definition.
%H S. Kitaev and J. Remmel, <a href="http://arxiv.org/abs/1305.6970">The 1-box pattern on pattern avoiding permutations</a>, arXiv preprint arXiv:1305.6970 [math.CO], 2013.
%Y Cf. A229730.
%K nonn,more
%O 0,5
%A _N. J. A. Sloane_, Oct 01 2013