A264377 - OEIS

A264377

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

%I #4 Nov 12 2015 07:58:55

%S 15,121,14329,711068,45132986,2546661201,149731056598,8620411258657,

%T 499872831041401,28871184063697655,1669447411395132846,

%U 96462826329498703173,5574683427373667949652,322122388885074528092794

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

%C Column 6 of A264379.

%H R. H. Hardin, <a href="/A264377/b264377.txt">Table of n, a(n) for n = 1..136</a>

%e Some solutions for n=3

%e ..7..2..3..4..5.12.11....7..2..3..8..5.12.13....7..2..9..8..5.10.13

%e ..0..1.10.17.18.13..6....0..1.14.11..4.17.18....0..1.16..3..4.17.18

%e .21..8..9.22.23.24.27...15.22.21.10..6.24.27...15.22.21.24..6.12.27

%e .14.15.16.25.26.19.20....9.23.16.25.26.19.20...14.23.11.25.26.19.20

%Y Cf. A264379.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 12 2015