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A264548 Number of (n+1)X(6+1) arrays of permutations of 0..n*7+6 with each element having directed index change -1,1 -1,2 1,0 or 0,-1.

%I A264548 #4 Nov 17 2015 15:35:40
%S A264548 3,96,764,11728,163744,1994830,25172836,316806958,3939510885,
%T A264548 49105816488,612105030734,7621730718736,94917598135688,
%U A264548 1182099712180116,14720466321079700,183312321420648794,2282783100595945090
%N A264548 Number of (n+1)X(6+1) arrays of permutations of 0..n*7+6 with each element having directed index change -1,1 -1,2 1,0 or 0,-1.
%C A264548 Column 6 of A264550.
%H A264548 R. H. Hardin, <a href="/A264548/b264548.txt">Table of n, a(n) for n = 1..210</a>
%e A264548 Some solutions for n=4
%e A264548 ..1..7..3..4.10..6.12....1..7..3..4.10.11.12....1..2..8..4.10..6.11
%e A264548 ..0..9..2.11.16..5.18....0..9..2.16.17..5..6....0.14.15..3.12..5.19
%e A264548 .15..8.17.22.23.20.13...15..8.22.18.23.20.13....7.16..9.18.23.25.13
%e A264548 .14.28.29.25.26.19.32...14.28.29.25.26.19.32...22.28.29.17.26.32.20
%e A264548 .21.30.31.24.33.34.27...21.30.31.24.33.34.27...21.30.31.24.33.34.27
%Y A264548 Cf. A264550.
%K A264548 nonn
%O A264548 1,1
%A A264548 _R. H. Hardin_, Nov 17 2015