|
|
A172722
|
|
Number of n X n 0..3 arrays with row sums 6 and column sums 6
|
|
1
|
|
|
0, 1, 55, 27636, 45934340, 210668680701, 2310106618930215, 54450121092072227480, 2538708180710780880644304, 218999995866993338639652628800, 33082630485031588732233929380223040
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,3
|
|
LINKS
|
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|