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A172731
Number of n X n 0..3 arrays with row sums 13 and column sums 13
1
0, 0, 0, 0, 6210, 20592419760, 272039989206828885, 11790866860533363630752256, 1609379339428507638996616962234528, 649308484381906359124692131947427492018400
OFFSET
1,5
LINKS
CROSSREFS
Sequence in context: A246889 A172629 A172697 * A330364 A230733 A293355
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 06 2010
STATUS
approved