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A172910
Number of 2*n X n 0..6 arrays with row sums 9 and column sums 18
1
0, 44, 22119391, 649096595660632, 496395338691326078075775, 6287689969637354023974752834007500, 936126190440040230109711933212013162356155460
OFFSET
1,2
LINKS
CROSSREFS
Sequence in context: A119078 A172878 A001782 * A119058 A218402 A131994
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 06 2010
STATUS
approved