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%I #4 Nov 17 2015 19:11:43
%S 4,160,2172,47571,868613,16284544,298587595,5442431797,99386232806,
%T 1803702025944,32778396578439,594763583660497,10789731888817704,
%U 195712516698029249,3549147337219998085,64361582471647592799
%N Number of (n+1)X(7+1) arrays of permutations of 0..n*8+7 with each element having directed index change 1,0 1,1 0,-1 or -1,1.
%C Column 7 of A264569.
%H R. H. Hardin, <a href="/A264568/b264568.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..1..8..3.10.11..6..7.14....1..2..9..4..5.12..7.14....1..8..3..4.11..6.13.14
%e ..9..0..2.12..4..5.15.22....0.16.17..3.13.20.15..6....9..0..2.18.19.20..5..7
%e .17.18.19.26.21.13.23.30....8.24.10.26.11.22.29.30...17.24.25.10.12.22.23.15
%e .16.32.33.34.29.20.37.38...25.32.18.28.19.36.21.23...16.32.27.28.35.21.31.38
%e .24.25.35.36.27.28.39.31...33.34.35.27.37.38.39.31...33.34.26.36.37.29.39.30
%Y Cf. A264569.
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 17 2015
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