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A264539
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Number of (6+1) X (n+1) arrays of permutations of 0..n*7+6 with each element having directed index change -2,-2 -1,0 0,1 or 1,0.
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1
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0, 100, 696, 8180, 119810, 1293264, 15187422, 179414540, 2052910368, 23919502368, 277388965381, 3208620078246, 37242102968460, 431510537455275, 5000791870294019, 57981675317696894, 671993281653567377
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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
.12..6..7..8..3....5.13..1..2..3....5..6..7..8..9....5..0..1..2..3
..0..1..2.13..4....0.11.12..7..4....0..1..2..3..4...17.18.12..7..4
..5.10.24.18..9...15..6.17..8..9...22.10.24.12.19...15..6.24..8..9
.20.11.16.17.14...10.21.16.23.14...20.11.16.13.14...10.11.29.13.14
.15.33.27.28.19...32.20.34.18.19...15.33.17.18.23...32.16.27.22.19
.30.21.22.23.34...30.31.22.33.24...30.21.32.27.34...20.21.26.23.34
.25.26.31.32.29...25.26.27.28.29...25.26.31.28.29...25.30.31.28.33
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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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