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A000273
Number of directed graphs (or digraphs) with n nodes.
(Formerly M3032 N1229)
+0
21
1, 1, 3, 16, 218, 9608, 1540944, 882033440, 1793359192848, 13027956824399552, 341260431952972580352, 32522909385055886111197440, 11366745430825400574433894004224
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified December 6 11:04 EST 2009. Contains 170427 sequences.
AT&T Labs Research
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