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A307929
Number of (undirected) Hamiltonian cycles in the n X n white bishop graph.
1
0, 1, 4, 396, 553008, 4701600128, 1782158930138112, 3276113857736492040192
OFFSET
2,3
LINKS
Eric Weisstein's World of Mathematics, Hamiltonian Cycle
Eric Weisstein's World of Mathematics, White Bishop Graph
FORMULA
a(n) = A282890(n)/2.
CROSSREFS
Cf. A282890.
Sequence in context: A339449 A116031 A115049 * A202172 A349460 A158111
KEYWORD
nonn,more,hard
AUTHOR
Eric W. Weisstein, May 06 2019
STATUS
approved