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A098625
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Consider the family of multigraphs enriched by the species of derangements. Sequence gives number of those multigraphs with n loops and edges.
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0
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1, 0, 2, 4, 39, 228, 2400, 23616, 307692, 4197408, 67658769, 1174316570, 22916090131, 482946085932
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