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A307928
Number of (undirected) Hamiltonian cycles in the n X n queen graph.
0
3, 1960, 402364270, 39741746126749664
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..4.
Eric Weisstein's World of Mathematics, Hamiltonian Cycle
Eric Weisstein's World of Mathematics, Queen Graph
FORMULA
a(n) = A158663(n)/2. - Andrew Howroyd, Sep 08 2019
CROSSREFS
Cf. A158663, A158664, A308139.
Sequence in context: A255862 A367941 A236481 * A193149 A024047 A102987
Adjacent sequences: A307925 A307926 A307927 * A307929 A307930 A307931
KEYWORD
nonn,more,hard
AUTHOR
Eric W. Weisstein, May 06 2019
STATUS
approved

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Last modified October 28 05:21 EDT 2024. Contains 377146 sequences.
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