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A129349
Number of directed Hamiltonian circuits in the n-triangular graph.
2
0, 2, 32, 6432, 19497984, 1109403156480, 1380937534541660160
OFFSET
2,2
LINKS
Eric Weisstein's World of Mathematics, Hamiltonian Cycle
Eric Weisstein's World of Mathematics, Triangular Graph
CROSSREFS
Sequence in context: A012599 A247859 A202629 * A180127 A342099 A091804
KEYWORD
nonn,more
AUTHOR
Eric W. Weisstein, Apr 10 2007
EXTENSIONS
a(6) from Alois P. Heinz, Nov 29 2010
a(7)-a(8) from Eric W. Weisstein, Mar 31 2014
Missing factor of 2 applied to a(8) by Eric W. Weisstein, Apr 08 2014
Offset corrected by Eric W. Weisstein, May 06 2019
STATUS
approved