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%I #4 Nov 11 2015 19:47:55
%S 128,17711,4900000,549201567,98684484373,15386771913704,
%T 2616784941180034,423590351890979093,70720633596543340140,
%U 11667647323281661702544,1939303748261775631813520,321550922297722913366223227
%N Number of (6+1)X(n+1) arrays of permutations of 0..n*7+6 with each element having index change +-(.,.) 0,0 0,1 or 1,2.
%C Row 6 of A264341.
%H R. H. Hardin, <a href="/A264346/b264346.txt">Table of n, a(n) for n = 1..123</a>
%e Some solutions for n=2
%e ..5..2..1....0..1..2....5..2..1....0..2..1....5..2..1....0..1..2....5..1..2
%e ..3..4..0....8..5..4....3..4..0....8..5..4....8..4..0....4..3..5....4..3..0
%e ..7..6..8....7..6..3...11..7..8....7..6..3....7..6..3....6..7..8...11..7..8
%e .10..9.11...10..9.11...10..9..6....9.10.11....9.11.10...14.10.11...10..9..6
%e .17.14.13...13.12.14...12.13.14...12.14.13...12.14.13...17.13..9...12.14.13
%e .15.16.12...20.17.16...20.17.16...16.15.17...20.17.16...16.15.12...15.17.16
%e .18.19.20...19.18.15...19.18.15...19.18.20...19.18.15...18.20.19...19.18.20
%Y Cf. A264341.
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 11 2015