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A189432
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Number of nX6 array permutations with each element not moving, or moving one space N, SW or SE
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1
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1, 13, 181, 2413, 40065, 606201, 9557077, 150278792, 2367212857, 37358187521, 589449930573, 9305507958493, 146913309982185, 2319624020512093, 36626205645266813, 578327113990185529, 9131891816444663056
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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 3X6
..6..1..2..9.10..5....6..7..2..3.10.11....6..7..8..3..4..5....0..7..8..9.10.11
.12..0..8..4..3.11....1..0..8..9..5..4....1..0.14..2.10.11....1.13..3..2..5..4
..7.13.14.15.16.17...12.13.14.15.16.17...12.13..9.15.16.17...12..6.14.15.16.17
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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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