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A008324
Number of simple regular bipartite graphs with 2n nodes.
4
1, 2, 3, 4, 6, 8, 18, 40, 230, 4296, 431206, 162267272, 201636689771, 777816803942186, 9865957936943931964, 395886667549681689591841, 53716176608076643470621234239, 23524515269630339982914646821899537, 35682168849414944013547274452501768506834
OFFSET
0,2
COMMENTS
First differs from A333732 at n = 12. - Andrew Howroyd, Apr 03 2020
LINKS
Brendan McKay and E. Rogoyski, Latin squares of order ten, Electron. J. Combinatorics, 2 (1995) #N3.
CROSSREFS
Row sums of A008327.
Sequence in context: A294679 A333160 A345250 * A333732 A274456 A333681
KEYWORD
nonn,hard,nice
AUTHOR
EXTENSIONS
a(0)=1 prepended and terms a(11) and beyond from Andrew Howroyd, Apr 03 2020
STATUS
approved