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A172566
Number of 3*n X n 0..1 arrays with row sums 6 and column sums 18
1
0, 0, 0, 0, 0, 1, 182509367040000, 712008996110160366168717566400, 7664603814657718197913972357390335773198400000, 299436894513044390420517533660659195248061275496427347927110000
OFFSET
1,7
LINKS
CROSSREFS
Sequence in context: A320874 A348801 A288278 * A214947 A364413 A295354
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 06 2010
STATUS
approved