%I #4 Nov 12 2015 07:06:10
%S 1,129,16641,418992,10549504,353333680,11834176225,371455955580,
%T 11659411209744,368071661804736,11619518840752384,365901756932584896,
%U 11522344217627105424,362249271223489619136,11388701120488963432704
%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 0,2 1,0 or -1,-2.
%C Row 6 of A264364.
%H R. H. Hardin, <a href="/A264370/b264370.txt">Table of n, a(n) for n = 1..22</a>
%e Some solutions for n=3
%e ..0..1..2..3....6..7..2..1....6..1..0..3....6..7..0..3....0..1..2..3
%e .10..5..4..7....0.11..4..3...10..5..2..7....4..1..2..5....4..5..6..7
%e .14..9..6.11...14..5..8..9....4..9..8.11....8..9.10.11....8..9.10.11
%e ..8.13.12.15...12.13.10.15...18.13.14.15...12.19.14.13...18.19.12.15
%e .16.17.18.19...22.23.16.17...12.23.16.17...22.17.16.15...16.13.14.17
%e .26.27.20.21...20.27.18.19...20.21.22.19...26.27.18.23...20.27.22.21
%e .24.25.22.23...24.21.26.25...24.25.26.27...20.21.24.25...24.25.26.23
%Y Cf. A264364.
%K nonn
%O 1,2
%A _R. H. Hardin_, Nov 12 2015