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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

%I #6 Nov 10 2015 10:54:21

%S 1,610,372100,46131250,5719140625,1201888840625,252579343635025,

%T 48585262182665120,9345687843615794176,1837459507629935674144,

%U 361263664983848912725561,70936527322260095931846664

%N 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.

%C Row 7 of A264017.

%H R. H. Hardin, <a href="/A264022/b264022.txt">Table of n, a(n) for n = 1..60</a>

%e Some solutions for n=2

%e ..5..1..2....0..1..2....0..1..2....8..1..2....5..1..2....0..1..2....5..1..2

%e ..8..4..0....3..4..5....8..4..5...11..4..5...11..4..0....3..4..5...11..4..0

%e .14..7..3...14..7..8...11..7..3...14..7..0....6..7..8....6..7..8...14..7..8

%e ..9.10.11...17.10.11....9.10..6....9.10..3...14.10..3....9.10.11....9.10..3

%e .12.13..6...20.13..6...20.13.14...17.13..6...17.13..9...17.13.14...17.13..6

%e .20.16.17...23.16..9...15.16.17...20.16.12...20.16.12...15.16.12...23.16.12

%e .18.19.15...18.19.12...23.19.12...18.19.15...18.19.15...23.19.20...18.19.20

%e .21.22.23...21.22.15...21.22.18...21.22.23...21.22.23...21.22.18...21.22.15

%Y Cf. A264017.

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 01 2015