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A156387
Number of 5X5 arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to n.
0
1, 2, 0, 0, 5, 3, 0, 0, 2, 4, 0, 0, 0, 4, 0, 0, 7, 4, 0, 0, 7, 0, 0, 0, 0, 8, 0, 0, 0, 10, 0, 0, 6, 0, 0, 0, 15, 6, 0, 0, 6, 6, 0, 0, 0, 11, 0, 0, 0, 6, 0, 0, 10, 14, 0, 0, 0, 0, 0, 0, 0, 10, 0, 0, 7, 12, 0, 0, 28, 0, 0, 0, 10, 6, 0, 0, 0, 6, 0, 0, 17, 12, 0, 0, 0, 16, 0, 0, 0, 14, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0
OFFSET
0,2
EXAMPLE
All solutions for n=4
...0.0.0.4.0...0.4.0.0.0...1.0.1.1.1...1.1.0.1.1...1.1.1.0.1
...4.0.0.0.0...0.0.0.0.4...1.1.1.1.0...1.1.0.1.1...0.1.1.1.1
...0.0.4.0.0...0.0.4.0.0...1.1.0.1.1...0.0.4.0.0...1.1.0.1.1
...0.0.0.0.4...4.0.0.0.0...0.1.1.1.1...1.1.0.1.1...1.1.1.1.0
...0.4.0.0.0...0.0.0.4.0...1.1.1.0.1...1.1.0.1.1...1.0.1.1.1
CROSSREFS
Sequence in context: A145430 A143160 A369730 * A370065 A324040 A340116
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 09 2009
STATUS
approved