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%I #4 Nov 19 2015 07:00:49
%S 4,32,280,4032,50353,604916,7907841,93847752,1194621651,14564772393,
%T 178963281032,2216731977253,27167583000228,334759250329245,
%U 4121109559810052,50670812782007912,623796135037373376
%N Number of (6+1)X(n+1) arrays of permutations of 0..n*7+6 with each element having directed index change -2,0 -1,0 0,-1 or 1,1.
%C Row 6 of A264628.
%H R. H. Hardin, <a href="/A264633/b264633.txt">Table of n, a(n) for n = 1..201</a>
%e Some solutions for n=4
%e ..1..6..3..4..9....1..2.12..4.14....1..2..3..4..9....1..2..7..4..9
%e .10..0..8..2.14....6..0..8..9..3....6..0..8.18.14...10..0.12.13..3
%e .11..5.13..7.19...15..5.13..7.24...11..5.17..7.19...11..5..6.14..8
%e .20.26.22.12.24...20.10.11.19.29...16.10.22.12.13...20.26.18.19.24
%e .25.15.16.17.18...25.26.16.17.18...21.15.27.24.29...25.15.16.17.29
%e .30.27.21.29.23...30.27.21.22.23...30.20.32.33.23...30.27.21.22.23
%e .31.32.33.34.28...31.32.33.34.28...31.25.26.34.28...31.32.33.34.28
%Y Cf. A264628.
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 19 2015
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