A129349 Number of directed Hamiltonian circuits in the n-triangular graph.

0, 2, 32, 6432, 19497984, 1109403156480, 1380937534541660160

Offset: 2

Author

Eric W. Weisstein, Apr 10 2007

Keywords

• nonn
• more

Links

• Eric Weisstein's World of Mathematics, Hamiltonian Cycle
• Eric Weisstein's World of Mathematics, Triangular Graph

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