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A264653
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Number of (n+1)X(6+1) arrays of permutations of 0..n*7+6 with each element having directed index change 1,1 2,2 -1,0 or 0,-1.
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1
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0, 41, 193, 3100, 48781, 580796, 7644038, 93971260, 1163775908, 14482108589, 177568766733, 2190703603084, 26984752545932, 331832433327581, 4085840672826651, 50271604425392099, 618555768777598955
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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
..7..2..9.10..5..6.13....1..8..3.10.11..6.13....1..8..3..4.11..6.13
..8.15.16.17.12..4.20...14..0.16..2.12..4..5...14..9.10.17.12.19..5
.21.22..0..1.19..3.27...21..7.17..9.19.20.27...21..7..0.24..2.20.27
.28.14.24.25.32.18.11...28.23.15.31.26.33.34...28.23.15.31.26.33.34
.29.30.31.23.33.34.26...29.30.22.32.24.25.18...29.30.22.32.16.25.18
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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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