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%I #10 Jun 16 2019 15:17:51
%S 1,3,15,101,818,7486,74648,793005,8843056,102464586
%N Numbers of intervals for the pruning-grafting lattices of size n.
%H J. L. Baril and J. M. Pallo, <a href="https://doi.org/10.1016/j.tcs.2008.08.031">The pruning-grafting lattice of binary trees</a>, Theoretical Computer Science, 409, 2008, 382-393.
%K nonn,more
%O 1,2
%A _Jean-Luc Baril_, Nov 24 2008
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