%I #6 Nov 10 2015 11:46:28
%S 69,8007,408698,23916656,1432853288,83609564805,4868342507373,
%T 283367589816531,16469467179397573,956260182816301823,
%U 55484547617668226346,3218321886243655288008,186643918339019352805709
%N Number of (n+1)X(6+1) arrays of permutations of 0..n*7+6 with each element having directed index change 0,0 0,1 1,0 -2,-1 or -1,-2.
%C Column 6 of A264172.
%H R. H. Hardin, <a href="/A264171/b264171.txt">Table of n, a(n) for n = 1..27</a>
%e Some solutions for n=2
%e .15.10.11..2..3.20..6....0..1..2..3..4.20..5...15..0..1.18..4..5..6
%e ..0..1..8..9..4..5.13...16..7..9.10.11.12..6...16..7..2..3.20.11.13
%e ..7.14.16.17.18.12.19...14..8.15.17.18.19.13...14..8..9.10.17.12.19
%Y Cf. A264172.
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 06 2015