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A156483
Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 25.
0
1, 4, 4, 58, 112, 5024, 18704, 5884232, 62428100, 91955846752, 2206580129292
OFFSET
1,2
CROSSREFS
Sequence in context: A009644 A196180 A369752 * A212328 A214615 A206489
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 09 2009
STATUS
approved