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A189279
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Number of nX8 array permutations with each element not moved or moved diagonally or antidiagonally by one
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1
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1, 1156, 140625, 39100009, 8366395024, 1949419118656, 441979857682489, 101143260268999524, 23076937169939058561, 5270856026569766627569, 1203479485449751104976144, 274821392418575218931980321
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OFFSET
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1,2
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for 3X8
..0..1..9.12..4..5.13..7....0..8..9..3..4.12.15..7....9..8..2..3.11..5..6..7
..8.18.19..2..3..6.23.15....1..2.19.18..5.22.23..6....1..0.17..4.19.20.21.22
.16.17.11.10.20.21.22.14...16.17.11.10.20.21.13.14...16.10.18.12.13.14.15.23
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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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