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A209542
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Number of nX7 array permutations with every element making zero or one right-handed knight moves (out 2, right 1)
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1
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1, 32, 5000, 635040, 42166080, 4045204800, 366400000000, 33556714023168, 3020965716215700, 277531329320894250, 25175937202959450484, 2292630530715092075920, 208706977378379482861824
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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 n=4
..0.10.11.12..4..5..6....0.14..2.16.13..5.19....0.14..2..3..4..5..6
..7.21.22.23..2.25.13....7..8.22.23.11..3..4....7..8.22.23.11.25.13
..1.24..3.26.18.19.20....1.24.25.17.18..6.20....1.24.16.26.18.19.20
..8..9.14.15.16.17.27...21..9.10.15.12.26.27...21..9.10.15.12.17.27
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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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