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A297059
Number of edge covers in the n X n rook graph.
0
0, 7, 156492, 221223005569649, 1151204909283644125337234622000
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..5.
Eric Weisstein's World of Mathematics,
Edge Cover
Eric Weisstein's World of Mathematics,
Rook Graph
CROSSREFS
Sequence in context:
A013842
A247791
A243859
*
A306256
A145322
A145335
Adjacent sequences:
A297056
A297057
A297058
*
A297060
A297061
A297062
KEYWORD
nonn
,
more
AUTHOR
Eric W. Weisstein
, Dec 24 2017
EXTENSIONS
a(4)-a(5) from
Andrew Howroyd
, Dec 27 2017
STATUS
approved
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Last modified April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)