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A172808
Number of n X n 0..4 arrays with row sums 9 and column sums 9
1
0, 0, 55, 157984, 2461011960, 148699584483880, 29715346096043717550, 17246529136870025302912000, 26159597034338175244538552103907, 95066344634881957233042525618261985200
OFFSET
1,3
LINKS
CROSSREFS
Sequence in context: A265980 A287053 A046194 * A243315 A172856 A093255
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 06 2010
STATUS
approved