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A156463
Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 16.
0
1, 2, 4, 11, 347, 38042, 12496449, 9230231522, 12532444401442, 31544855681886910
OFFSET
1,2
CROSSREFS
Sequence in context: A198864 A038093 A057284 * A227530 A218129 A156519
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 09 2009
STATUS
approved