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A234184
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T(n,k)=Number of (n+1)X(k+1) 0..5 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1
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9
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76, 388, 388, 1978, 3908, 1978, 10120, 39098, 39098, 10120, 51886, 392664, 771710, 392664, 51886, 266434, 3949718, 15322566, 15322566, 3949718, 266434, 1369642, 39781838, 304760768, 604124712, 304760768, 39781838, 1369642, 7046416
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OFFSET
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1,1
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COMMENTS
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Table starts
.....76......388.......1978........10120...........51886............266434
....388.....3908......39098.......392664.........3949718..........39781838
...1978....39098.....771710.....15322566.......304760768........6069161546
..10120...392664...15322566....604124712.....23888919458......946183426722
..51886..3949718..304760768..23888919458...1881935211706...148632892397508
.266434.39781838.6069161546.946183426722.148632892397508.23438907703606286
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LINKS
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FORMULA
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Empirical for column k:
k=1: a(n) = 10*a(n-1) -27*a(n-2) +3*a(n-3) +36*a(n-4) +12*a(n-5)
k=2: [order 11]
k=3: [order 22]
k=4: [order 60]
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EXAMPLE
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Some solutions for n=2 k=4
..0..0..1..2..2....1..0..1..0..0....1..0..1..0..1....1..2..1..2..2
..0..1..1..1..1....1..1..1..1..1....1..1..0..1..1....1..1..2..1..1
..1..0..1..1..1....0..1..1..2..1....0..1..1..1..1....0..1..2..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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