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A156482
Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 25.
0
1, 4, 16, 142, 2832, 250472, 46559350, 70028916760, 424743527181996, 5415473412421080256
OFFSET
1,2
CROSSREFS
Sequence in context: A362143 A358289 A375919 * A335832 A173346 A319166
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 09 2009
STATUS
approved