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A172728
Number of n X n 0..3 arrays with row sums 16 and column sums 16.
0
0, 0, 0, 0, 0, 202410, 68480747646822, 68307608848277646753795, 202230411632955453212580408141744, 1856926911618773209041555011161165016996700
OFFSET
1,6
CROSSREFS
Sequence in context: A242518 A235929 A172623 * A345662 A290505 A205891
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 06 2010
STATUS
approved