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A216694
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T(n,k)=Number of horizontal, vertical, diagonal or knight-move neighbor colorings of an nXk array with new integer colors introduced in row major order
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4
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1, 1, 1, 2, 2, 2, 5, 9, 9, 5, 15, 90, 189, 90, 15, 52, 1451, 11730, 11730, 1451, 52, 203, 33694, 1561834, 6901440, 1561834, 33694, 203, 877, 1047754, 370625430, 11239872497, 11239872497, 370625430, 1047754, 877, 4140, 41569451
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OFFSET
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1,4
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COMMENTS
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Table starts
...1.......1.........2...........5..........15........52..........203......877
...1.......2.........9..........90........1451.....33694......1047754.41569451
...2.......9.......189.......11730.....1561834.370625430.139733635588
...5......90.....11730.....6901440.11239872497
..15....1451...1561834.11239872497
..52...33694.370625430
.203.1047754
.877
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LINKS
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EXAMPLE
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Some solutions for n=2 k=4
..0..1..2..1....0..1..2..3....0..1..2..3....0..1..2..1....0..1..2..1
..3..4..5..3....4..2..4..0....3..4..5..4....1..3..4..5....3..2..4..5
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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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