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A206974
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T(n,k)=Number of nXk 0..3 arrays avoiding the pattern z-1 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal
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12
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4, 16, 16, 61, 256, 61, 232, 3721, 3721, 232, 882, 53824, 180294, 53824, 882, 3353, 777924, 8685113, 8688551, 777924, 3353, 12747, 11242609, 419203246, 1391081032, 417476451, 11242609, 12747, 48460, 162486009, 20232472915, 223912418544
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OFFSET
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1,1
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COMMENTS
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Table starts
.....4.........16.............61..............232...............882
....16........256...........3721............53824............777924
....61.......3721.........180294..........8685113.........419203246
...232......53824........8688551.......1391081032......223912418544
...882.....777924......417476451.....221715091199...118749552817647
..3353...11242609....20061347530...35350565625684.63023113538493420
.12747..162486009...964232197214.5637076828393230
.48460.2348371600.46342878010975
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LINKS
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EXAMPLE
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Some solutions for n=4 k=3
..2..0..3....2..0..1....3..1..1....2..1..2....1..1..0....1..0..0....1..3..3
..0..2..0....0..2..0....1..3..3....3..0..1....3..2..3....0..0..3....1..1..3
..3..1..1....1..2..1....3..1..3....2..0..0....3..0..0....2..2..1....0..1..0
..2..0..2....3..0..0....1..3..3....1..3..0....2..1..3....0..1..3....0..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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