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A257385
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T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with no 3x3 subblock diagonal sum equal to the antidiagonal sum or central row sum less than the central column sum
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6
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9300, 119716, 119716, 1719620, 1444804, 1719620, 24720784, 20611600, 20611600, 24720784, 349003536, 343435024, 190904784, 343435024, 349003536, 4925793856, 5413133476, 2462144400, 2462144400, 5413133476, 4925793856, 69733153264
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OFFSET
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1,1
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COMMENTS
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Table starts
.........9300.........119716.........1719620........24720784.......349003536
.......119716........1444804........20611600.......343435024......5413133476
......1719620.......20611600.......190904784......2462144400.....38404362240
.....24720784......343435024......2462144400.....17165192256....188932792896
....349003536.....5413133476.....38404362240....188932792896...1137602635980
...4925793856....81296835876....560006768896...2578927657216..11412302804100
..69733153264..1247979436900...7744856653728..33052610739600.138013711391664
.987300576900.19524520846336.111070015128576.423586575525961
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LINKS
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FORMULA
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Empirical for column k:
k=1: [linear recurrence of order 81]
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EXAMPLE
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Some solutions for n=1 k=4
..0..0..0..0..0..1....0..0..0..0..2..0....0..0..0..0..0..2....0..0..0..0..1..2
..0..2..0..2..1..2....1..2..2..0..2..2....2..2..0..2..2..2....0..1..1..2..0..0
..1..0..2..1..1..0....1..0..2..1..0..0....2..0..1..1..0..1....0..0..1..1..1..0
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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