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A099703
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Consider the family of multigraphs enriched by the species of simple graphs. Sequence gives number of those multigraphs with n arcs.
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1, 1, 8, 112, 2350, 67526, 2514688, 117239888, 6756599164, 509020241244, 72817721736544, 41583904069469312
(list; graph; refs; listen; history; internal format)
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