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%I #4 Nov 10 2015 15:00:09
%S 1,476,9724,197283,6080234,157344756,4076914388,108938582132,
%T 2873909666826,75778281689996,2000675174765756,52737323325950072,
%U 1389226958546893740,36583604627425625924,962973302936002433384
%N Number of (6+1)X(n+1) arrays of permutations of 0..n*7+6 with each element having directed index change 0,0 0,1 1,0 or -1,-2.
%C Row 6 of A264285.
%H R. H. Hardin, <a href="/A264290/b264290.txt">Table of n, a(n) for n = 1..209</a>
%e Some solutions for n=4
%e ..7..0..2..3..4....7..1..2..3..4....0..1..9..2..3....0..1..9..2..3
%e .12..1..6..8..9....0..5..6..8..9...12..5..6..8..4...12..6.14..7..4
%e ..5.10.11.13.14...17.10.19.12.13...10.11..7.13.14....5.10.11..8.13
%e .15.16.24.18.19...15.11.16.18.14...22.15.16.17.19...15.16.24.18.19
%e .20.21.17.22.23...27.20.21.22.23...27.21.29.18.24...20.21.17.22.23
%e .32.26.27.28.29...32.26.34.28.24...20.25.26.23.28...25.26.34.28.29
%e .25.30.31.33.34...25.30.31.33.29...30.31.32.33.34...30.31.27.32.33
%Y Cf. A264285.
%K nonn
%O 1,2
%A _R. H. Hardin_, Nov 10 2015
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