A308131 Number of (undirected) Hamiltonian paths in the n X n knight graph.

0, 0, 0, 0, 864, 3318960, 82787609160, 9795914085489952

Offset: 1

Author

Eric W. Weisstein, May 14 2019

Keywords

• nonn
• more
• hard

Links

• Eric Weisstein's World of Mathematics, Hamiltonian Path
• Eric Weisstein's World of Mathematics, Knight Graph

Crossrefs

Cf. A165134, A169696 (3 X n), A079137 (4 X n), A083386 (5 X n), A306281 (6 X n), A306283 (7 X n).

Formula

a(n) = A165134(n)/2.