%I #4 Nov 12 2015 07:04:39
%S 1,28,784,7168,65536,730368,8139609,86397399,917060089,9745523645,
%T 103564894225,1098865637220,11659411209744,123652174760256,
%U 1311374995519744,13905429141268656,147449021266573569
%N Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change 0,0 0,2 1,0 or -1,-2.
%C Row 4 of A264364.
%H R. H. Hardin, <a href="/A264368/b264368.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..0..8..9..3..4....7..8..9..1..2....7..1..9..3..2....0..1..9..3..2
%e ..5..1..2..6..7....0.13.14..3..4....0.13..5..6..4....5..6..7..8..4
%e .17.11.10.13.14....5..6.10.11.12...10.11.12..8.14...10.11.12.13.14
%e .22.23.12.16.19...15.23.17.16.19...22.23.17.16.19...22.16.15.18.19
%e .15.21.20.18.24...20.21.22.18.24...15.21.20.18.24...20.21.17.23.24
%Y Cf. A264364.
%K nonn
%O 1,2
%A _R. H. Hardin_, Nov 12 2015