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A308586
Number of (undirected) Hamiltonian paths on the n X n X n grid graph.
0
0, 72, 2480304, 27746717207772000
OFFSET
1,2
LINKS
R. D. Schram, H. Schiessel, Corrigendum: exact enumeration of Hamiltonian walks on the 4x4x4 cube and applications to protein folding, J. Phys. A: Math. Theor. 46 (2013) 485001.
Eric Weisstein's World of Mathematics, Grid Graph
Eric Weisstein's World of Mathematics, Hamiltonian Path
FORMULA
a(n) = A193346(n)/2.
CROSSREFS
Cf. A193346 (directed Hamiltonian paths).
Sequence in context: A028671 A261815 A159440 * A113889 A099191 A051325
KEYWORD
nonn,hard,more
AUTHOR
Eric W. Weisstein, Jun 09 2019
STATUS
approved