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A235299
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Number of (n+1)X(9+1) 0..3 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 3 (constant stress 1X1 tilings)
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1
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96640, 104988, 115952, 138744, 172288, 242592, 358016, 603216, 1044640, 2006448, 3872192, 8117424, 16889248, 38126832, 84508736, 205202736, 481284640, 1249786608, 3069367232, 8404486704, 21326389408, 60552997872, 156864001856
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OFFSET
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1,1
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COMMENTS
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Column 9 of A235301
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..25
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FORMULA
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Empirical: a(n) = 3*a(n-1) +17*a(n-2) -57*a(n-3) -86*a(n-4) +372*a(n-5) +76*a(n-6) -972*a(n-7) +360*a(n-8) +864*a(n-9) -576*a(n-10)
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EXAMPLE
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Some solutions for n=5
..2..0..3..0..3..0..3..1..3..0....3..2..0..1..3..2..3..2..3..0
..1..2..2..2..2..2..2..3..2..2....0..2..3..1..0..2..0..2..0..0
..2..0..3..0..3..0..3..1..3..0....3..2..0..1..3..2..3..2..3..0
..0..1..1..1..1..1..1..2..1..1....0..2..3..1..0..2..0..2..0..0
..2..0..3..0..3..0..3..1..3..0....3..2..0..1..3..2..3..2..3..0
..0..1..1..1..1..1..1..2..1..1....0..2..3..1..0..2..0..2..0..0
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CROSSREFS
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Sequence in context: A224569 A224570 A224577 * A186013 A102868 A253618
Adjacent sequences: A235296 A235297 A235298 * A235300 A235301 A235302
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin, Jan 05 2014
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STATUS
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approved
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