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A307936
Numbers of (undirected) Hamiltonian paths in the complete tripartite graph K_{n,n,n}.
0
3, 120, 18792, 7547904, 6210432000, 9116955648000, 21746167511040000, 78775578609057792000, 411821286886186942464000, 2985318922218593845248000000, 29060162328471184917135360000000, 369984034079871408445744742400000000
OFFSET
1,1
LINKS
Eric Weisstein's World of Mathematics, Complete Tripartite Graph
Eric Weisstein's World of Mathematics, Hamiltonian Path
FORMULA
a(n) = A234633(n)/2.
CROSSREFS
Cf. A234633.
Sequence in context: A185554 A134230 A321109 * A308142 A289704 A246292
KEYWORD
nonn
AUTHOR
Eric W. Weisstein, May 06 2019
STATUS
approved