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A264378 Number of (n+1)X(7+1) arrays of permutations of 0..n*8+7 with each element having directed index change 2,-2 -1,0 -1,2 1,0 or 0,-1.

%I A264378 #4 Nov 12 2015 07:59:50
%S A264378 25,544,88264,9407584,1187897216,135926940964,16353452350876,
%T A264378 1906883090233889,225710195773223581,26480802739477668891,
%U A264378 3118944367808136172136,366509498887083495949171
%N A264378 Number of (n+1)X(7+1) arrays of permutations of 0..n*8+7 with each element having directed index change 2,-2 -1,0 -1,2 1,0 or 0,-1.
%C A264378 Column 7 of A264379.
%H A264378 R. H. Hardin, <a href="/A264378/b264378.txt">Table of n, a(n) for n = 1..38</a>
%e A264378 Some solutions for n=3
%e A264378 ..8..9.10..4..5..6.12.13....8..2..3..9.10..6.14.13....8..2..3..4.10.11..7.15
%e A264378 ..0..1..2..3.18.14.20.21....0..1.11.12..4..5.15..7....0..1.16.19.18..5.22.21
%e A264378 .24.25.26.11.28..7.30.31...24.25.26.20.28.27.30.31...17..9.24.20..6.27.28.29
%e A264378 .16.17.27.19.29.15.22.23...16.17.18.19.29.21.22.23...25.26.12.13.14.30.31.23
%Y A264378 Cf. A264379.
%K A264378 nonn
%O A264378 1,1
%A A264378 _R. H. Hardin_, Nov 12 2015