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A266572
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T(n,k)=Number of nXk arrays containing k copies of 0..n-1 with no element 1 greater than its northwest or southwest neighbor modulo n and the upper left element equal to 0.
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5
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1, 1, 1, 1, 1, 2, 1, 1, 5, 6, 1, 1, 15, 74, 24, 1, 1, 109, 2320, 2668, 120, 1, 1, 574, 77830, 729874, 150836, 720, 1, 1, 2840, 2595190, 227032241, 466056593, 12011058, 5040, 1, 1, 13767, 94930586, 81044162960, 1814200905314, 515679132204, 1279437414
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OFFSET
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1,6
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COMMENTS
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Table starts
.....1..........1............1.............1...........1........1..........1
.....1..........1............1.............1...........1........1..........1
.....2..........5...........15...........109.........574.....2840......13767
.....6.........74.........2320.........77830.....2595190.94930586.3708826784
....24.......2668.......729874.....227032241.81044162960
...120.....150836....466056593.1814200905314
...720...12011058.515679132204
..5040.1279437414
.40320
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LINKS
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EXAMPLE
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Some solutions for n=4 k=4
..0..1..0..3....0..1..0..3....0..1..3..3....0..2..2..3....0..2..3..2
..2..2..3..0....1..2..1..2....2..3..0..1....0..3..1..1....0..0..2..1
..2..1..1..3....2..3..0..3....0..2..1..3....0..3..2..1....2..3..3..1
..2..1..3..0....1..0..3..2....2..2..0..1....3..2..1..0....3..0..1..1
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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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