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A307928
Number of (undirected) Hamiltonian cycles in the n X n queen graph.
0
3, 1960, 402364270, 39741746126749664
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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 April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)