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A081064 Number of labeled acyclic digraphs with n nodes and k arcs. +0
3
1, 1, 2, 1, 6, 12, 6, 1, 12, 60, 152, 186, 108, 24, 1, 20, 180, 940, 3050, 6180, 7960, 6540, 3330, 960, 120, 1, 30, 420, 3600, 20790, 83952, 240480, 496680, 750810, 838130, 691020, 416160, 178230, 51480, 9000, 720, 1, 42, 840, 10570, 93030, 601944 (list; graph; listen)
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Last modified December 20 00:58 EST 2009. Contains 171054 sequences.


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