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%I #4 Nov 18 2015 20:37:29
%S 0,8,6,104,553,2232,21312,86812,553861,3407800,16888371,108293432,
%T 590867753,3371103500,19838294637,109788155032,640910245323,
%U 3646664185104,20751408860377,119635268746040,679631607840939
%N Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change 1,0 0,-1 1,2 or -1,1.
%C Row 4 of A264583.
%H R. H. Hardin, <a href="/A264587/b264587.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..1..2..3..4..8....1..5..3..4..8....1..2..3..7..8....1..2..3..7..8
%e ..6.10..0.12.13....0..7..2.12.13....0.10.11..9..4....6.10..0..9..4
%e ..5.15..7.17..9...11.15.16..6..9....5..6.13.14.18...11.12..5.17.18
%e .16.20.18.11.14...10.20.18.19.14...16.20.12.19.23...16.20.21.13.14
%e .21.22.23.24.19...21.22.23.24.17...21.22.15.24.17...15.22.23.24.19
%Y Cf. A264583.
%K nonn
%O 1,2
%A _R. H. Hardin_, Nov 18 2015