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A098345
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Consider the family of multigraphs enriched by the species of binary arborescences. Sequence gives number of those multigraphs with n arcs.
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1, 1, 10, 170, 4182, 137262, 5721356, 292803772, 17946811644, 1292298341980, 107643364177688, 10240855765623320
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