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A234436
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Number of (n+1)X(1+1) 0..2 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 1 (constant stress 1X1 tilings)
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1
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32, 120, 448, 1680, 6272, 23520, 87808, 329280, 1229312, 4609920, 17210368, 64538880, 240945152, 903544320, 3373232128, 12649620480, 47225249792, 177094686720, 661153497088, 2479325614080, 9256148959232, 34710558597120
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OFFSET
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1,1
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COMMENTS
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Column 1 of A234443
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..210
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FORMULA
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Empirical: a(n) = 14*a(n-2)
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EXAMPLE
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Some solutions for n=5
..0..1....1..0....0..1....2..1....0..1....1..0....0..0....1..1....0..1....2..0
..0..0....2..2....0..0....0..0....0..2....1..1....1..0....1..0....2..2....1..0
..1..2....1..2....2..1....1..2....0..1....2..1....2..2....2..2....0..1....2..2
..0..0....0..2....2..2....1..1....0..0....2..0....0..1....2..1....0..0....2..1
..0..1....0..1....2..1....2..1....0..1....1..0....1..1....2..2....2..1....0..0
..1..1....0..0....0..0....1..1....2..2....1..1....1..2....0..1....2..0....1..2
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CROSSREFS
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Sequence in context: A231527 A298201 A234443 * A297461 A297698 A223314
Adjacent sequences: A234433 A234434 A234435 * A234437 A234438 A234439
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin, Dec 26 2013
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STATUS
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approved
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