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A052152
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Number of self-complementary directed 3-multigraphs with loops on 2n nodes.
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0
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8, 8256, 1431787520, 48038430520647680, 330117345346734148058349568, 483957144078539402095793819136691273728, 155682086691161145712706205845400916732707415735140352
(list; graph; refs; listen; history; internal format)
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