cp's OEIS Frontend

A264556 Number of (7+1)X(n+1) arrays of permutations of 0..n*8+7 with each element having directed index change -1,1 -1,2 1,0 or 0,-1.

%I A264556 #4 Nov 17 2015 15:41:43
%S A264556 0,93,1204,23140,813473,25172836,591482528,15554895920,426023121887,
%T A264556 11212094301173,288664400022091,7526121840247476,196724860860294913,
%U A264556 5099876575111214715,131971387912281226253,3420386371154190796380
%N A264556 Number of (7+1)X(n+1) arrays of permutations of 0..n*8+7 with each element having directed index change -1,1 -1,2 1,0 or 0,-1.
%C A264556 Row 7 of A264550.
%H A264556 R. H. Hardin, <a href="/A264556/b264556.txt">Table of n, a(n) for n = 1..73</a>
%e A264556 Some solutions for n=4
%e A264556 ..1..2..3..4..7....1..2..5..6..8....1..2..3..4..8....1..2..6..4..8
%e A264556 ..0.10..8.11.13....0..7.10..3..4....0..7.11.12.13....0..7.10..3.12
%e A264556 ..5..6.15.14..9...11.12.15.17..9....5..6.15.16..9....5.15.13.14..9
%e A264556 .16.20.12.22.23...16.20.18.13.14...10.17.20.19.14...16.11.20.19.23
%e A264556 .21.25.17.18.19...21.22.23.24.19...21.22.23.18.28...21.22.17.18.27
%e A264556 .26.27.30.32.24...26.27.30.31.33...26.27.30.32.24...26.30.28.29.24
%e A264556 .31.35.33.28.29...25.32.35.28.29...25.35.33.37.29...25.35.33.37.38
%e A264556 .36.37.38.39.34...36.37.38.39.34...36.31.38.39.34...36.31.32.39.34
%Y A264556 Cf. A264550.
%K A264556 nonn
%O A264556 1,2
%A A264556 _R. H. Hardin_, Nov 17 2015