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Hilbert series of combinatorial Hopf algebra H(Heap_2).
0

%I #6 Jan 22 2015 14:36:07

%S 1,1,6,42,313,2407,18848,149271,1191092,9553551,76910632

%N Hilbert series of combinatorial Hopf algebra H(Heap_2).

%H J.-P. Bultel, S. Giraudo, <a href="http://arxiv.org/abs/1406.6903">Combinatorial Hopf algebras from PROs</a>, arXiv preprint arXiv:1406.6903, 2014

%K nonn,more

%O 0,3

%A _N. J. A. Sloane_, Sep 21 2014