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A264382
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Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change 2,-2 -1,0 -1,2 1,0 or 0,-1.
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1
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0, 25, 441, 3778, 60858, 711068, 9407584, 115929779, 1485398475, 18746069596, 237937556367, 3012183685044, 38165904080061, 483579364451792, 6125734123144467, 77617437527388938, 983250878745280550
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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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FORMULA
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Empirical recurrence of order 81 (see link above)
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EXAMPLE
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Some solutions for n=4
..1..6..5..8..9....1..2..7..6..9....5..6..7..8..9....1..6..3..4..7
..0.11.12.13..4....0.11.10..3..4....0..1.10..3..4....0.11..2.13.14
..2..3..7.18.17....5.16.15..8.17....2.12.15.18.17....5.12.15.18..9
.10.21.20.23.22...20.21.18.13.14...16.11.20.13.14...10..8.20.23.22
.15.16.14.24.19...12.22.23.24.19...21.22.23.24.19...21.16.17.24.19
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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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