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A264253
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Number of (n+1)X(4+1) arrays of permutations of 0..n*5+4 with each element having directed index change 0,1 0,-1 0,2 1,0 or -1,0.
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1
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89, 1124, 23805, 397462, 7467925, 132080760, 2411543681, 43298007242, 784323747917, 14141096261412, 255592293615989, 4613628383189518, 83336993543802001, 1504783875045547408, 27176540318951820384
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=3
..1..0..7..4..3....5..2..3..4..9....1..0..3..4..2....1..0..3..4..2
..6..5..2.13..8....0..1..8..6..7...10.11..6..9..7....6..5..8..7.14
.15.10.11.12..9...11.16.17.12.19....5.12.17..8.19...15.12.13.18..9
.16.17.18.19.14...10.15.18.13.14...16.15.18.13.14...10.11.16.19.17
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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