A264064 Number of (7+1)X(n+1) arrays of permutations of 0..n*8+7 with each element having index change +-(.,.) 0,0 1,2 or 2,-2.
1, 832, 692224, 74880000, 8100000000, 1869178500000, 431336822822500
Offset: 1
Keywords
Examples
Some solutions for n=2 ..0..1..2....5..1..2....5..1..2....0..1..2....0..1..6....0..1..2....5..1..2 ..3..4..5....3..4..0....8..4..0....3..4..5....3..4..9....3..4..5....8..4..0 ..6..7.12...11..7..8...11..7..3....6..7.12....2..7..8...11..7..8...11..7..3 ..9.10.11....9.10..6....9.10..6...14.10.15....5.10.11....9.10..6...14.10..6 ..8.13.14...17.13.14...12.13.14....8.13..9...17.13.14...12.13.14...12.13..9 .15.16.21...15.16.12...15.16.17...11.16.17...15.16.12...20.16.21...20.16.21 .23.19.20...23.19.20...18.19.20...23.19.20...18.19.20...18.19.15...18.19.15 .17.22.18...21.22.18...21.22.23...21.22.18...21.22.23...17.22.23...17.22.23
Crossrefs
Cf. A264059.
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