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A213993
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Number of 4X4 0..n matrices whose square is also a 0..n matrix
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1
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6327, 120133, 604639, 3510112, 9131098, 29365738, 56599992, 127113628, 255379242, 499365458, 784233528, 1531915046, 2261261860, 3473439982, 5267581848, 8552671195, 11581885709, 17881607889, 23603815011, 34808081571
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=3
..0..2..1..0....1..0..2..3....0..1..1..2....0..0..1..0....1..0..0..0
..0..0..0..0....0..1..1..0....0..1..0..0....0..0..1..2....0..0..1..2
..0..3..0..0....0..0..0..0....0..0..0..0....1..0..0..0....0..0..1..3
..1..2..0..0....0..0..0..0....1..1..0..0....1..0..0..0....1..0..0..0
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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