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A264633
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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 -2,0 -1,0 0,-1 or 1,1.
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1
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4, 32, 280, 4032, 50353, 604916, 7907841, 93847752, 1194621651, 14564772393, 178963281032, 2216731977253, 27167583000228, 334759250329245, 4121109559810052, 50670812782007912, 623796135037373376
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=4
..1..6..3..4..9....1..2.12..4.14....1..2..3..4..9....1..2..7..4..9
.10..0..8..2.14....6..0..8..9..3....6..0..8.18.14...10..0.12.13..3
.11..5.13..7.19...15..5.13..7.24...11..5.17..7.19...11..5..6.14..8
.20.26.22.12.24...20.10.11.19.29...16.10.22.12.13...20.26.18.19.24
.25.15.16.17.18...25.26.16.17.18...21.15.27.24.29...25.15.16.17.29
.30.27.21.29.23...30.27.21.22.23...30.20.32.33.23...30.27.21.22.23
.31.32.33.34.28...31.32.33.34.28...31.25.26.34.28...31.32.33.34.28
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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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