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A099694 Consider the family of multigraphs enriched by the species of directed sets. Sequence gives number of those multigraphs with n loops and arcs. +0
1
1, 2, 17, 244, 5283, 156092, 5954547, 282221828, 16159327961, 1094056231572, 86116276633357 (list; graph; listen)
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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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