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A308131
Number of (undirected) Hamiltonian paths in the n X n knight graph.
2
0, 0, 0, 0, 864, 3318960, 82787609160, 9795914085489952
OFFSET
1,5
LINKS
Eric Weisstein's World of Mathematics, Hamiltonian Path
Eric Weisstein's World of Mathematics, Knight Graph
FORMULA
a(n) = A165134(n)/2.
CROSSREFS
Cf. A165134, A169696 (3 X n), A079137 (4 X n), A083386 (5 X n), A306281 (6 X n), A306283 (7 X n).
Sequence in context: A299413 A300055 A082243 * A114497 A129035 A129034
KEYWORD
nonn,more,hard
AUTHOR
Eric W. Weisstein, May 14 2019
STATUS
approved