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%I #4 Nov 15 2015 18:43:36
%S 13,64,6084,241432,9813822,427111736,17171750212,715790653443,
%T 29106633773397,1188933525197424,48274598233923460,
%U 1956764393333783752,79158883562183764249,3196806065835373923009,128962574353107045861077
%N Number of (7+1)X(n+1) arrays of permutations of 0..n*8+7 with each element having directed index change -1,1 0,-1 0,1 or 1,0.
%C Row 7 of A264506.
%H R. H. Hardin, <a href="/A264513/b264513.txt">Table of n, a(n) for n = 1..63</a>
%e Some solutions for n=3
%e ..1..4..5..2....1..0..3..6....1..2..3..6....1..4..3..2....1..2..3..6
%e ..0..6..7..3....5..4..2.10....0..4..7.10....0..6..5.10....0..4..7.10
%e ..9.10.11.14....9..8.11..7....9..5.11.14....9.12.13..7....9..5.13.14
%e ..8.12.13.18...13.12.15.18....8.16.15.18....8.14.15.11....8.12.15.11
%e .17.16.19.15...17.16.14.22...12.13.19.22...17.16.19.18...17.16.19.18
%e .21.24.25.26...21.24.23.19...21.17.23.26...21.20.23.22...21.22.23.26
%e .20.28.22.23...20.28.25.26...20.24.25.30...25.28.29.26...20.28.29.30
%e .29.30.31.27...29.30.31.27...29.28.31.27...24.30.31.27...24.25.31.27
%Y Cf. A264506.
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 15 2015
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