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A172726
Number of n X n 0..3 arrays with row sums 18 and column sums 18
0
0, 0, 0, 0, 0, 1, 4662857360, 54450121092072227480, 1469748355306450464225368161315, 111562091000778108490941203120508002739900
OFFSET
1,7
CROSSREFS
Sequence in context: A286817 A280182 A034916 * A172797 A199631 A124977
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 06 2010
STATUS
approved