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A209023
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T(n,k)=Number of nXk 1..5 arrays with every element value z a city block distance of exactly z from another element value z
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3
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0, 1, 1, 1, 2, 1, 3, 16, 16, 3, 3, 152, 488, 152, 3, 16, 1721, 26029, 26029, 1721, 16, 21, 21083, 1745235, 7562979, 1745235, 21083, 21, 71, 217825, 116464240
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OFFSET
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1,5
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COMMENTS
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Table starts
..0.....1.......1.......3.......3........16.....21.71
..1.....2......16.....152....1721.....21083.217825
..1....16.....488...26029.1745235.116464240
..3...152...26029.7562979
..3..1721.1745235
.16.21083
.21
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LINKS
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EXAMPLE
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Some solutions for n=3 k=4
..1..1..3..2....4..3..1..1....4..2..1..1....5..2..4..2....3..2..3..3
..3..3..2..3....2..1..2..1....4..1..1..4....2..1..1..3....3..2..3..3
..3..2..3..3....3..1..4..2....4..2..4..4....4..3..1..5....2..2..3..2
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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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