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A219893
Number of directed 6-regular graphs on n nodes.
7
1, 7, 5021, 79818336, 1775668832509
OFFSET
7,2
LINKS
Gunnar Brinkmann, Generating regular directed graphs, Discrete Math., 313 (2012), 1-7.
CROSSREFS
Column k=6 of A350910.
Sequence in context: A364640 A340292 A095155 * A243780 A246519 A062644
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Nov 30 2012
STATUS
approved