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A287153
Number of matchings in the graph P_2 X P_n X P_n.
1
1, 2, 108, 90040, 1441534384, 423657524608288, 2303329608950881340608, 231357371294195870227169041024, 429425508267098531071850722486436668160
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OFFSET
0,2
LINKS
Table of n, a(n) for n=0..8.
Wikipedia,
Matching (graph theory)
FORMULA
a(n) = Sum_{k=0..n^2}
A287152
(n,k).
CROSSREFS
Row sums of
A287152
.
Sequence in context:
A157067
A364616
A375841
*
A372117
A247098
A245056
Adjacent sequences:
A287150
A287151
A287152
*
A287154
A287155
A287156
KEYWORD
nonn
AUTHOR
Alois P. Heinz
, May 20 2017
STATUS
approved
