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A189609
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Number of n X 8 array permutations with each element not moving, or moving one space E, S or NW.
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1
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1, 277, 11568, 671452, 36212912, 1968061359, 106717857552, 5778059258273, 312573095738121, 16898643737922425, 913264073225048477, 49345410349072594251, 2665888554266786412238, 144014204839657901069783
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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 3 X 8
..9..0..2.12..4..5..6..7....9..0..2.12.13.14..5..7....0..1.11.12..3..5.15..6
.17..1.19..3.11.22.13.15...17..1.10..3..4.22..6.15....8..9..2.10..4.13.14..7
..8.16.10.18.20.21.14.23....8.16.18.11.19.20.21.23...16.17.18.19.20.21.22.23
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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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