A264243 - OEIS

%I #6 Nov 10 2015 11:49:37

%S 1289,105839,14586353,1687935233,203949869341,24147725322385,

%T 2870671705359089,340242455231598701,40338122624389286144,

%U 4779913295895287243047,566388068523889864179269

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

%C Column 7 of A264244.

%H R. H. Hardin, <a href="/A264243/b264243.txt">Table of n, a(n) for n = 1..132</a>

%e Some solutions for n=2

%e ..0..3..2..4.11..6.13..7....0..1..2.10..4..5..6..7....0..2..4..5.11.12.13..7

%e ..9.16..1.18.14.20..5.15....9.16.11.18..3.14.15.22....8.10..1.18..3.15.21..6

%e .17..8.19.10.21.12.22.23...17..8.20.19.21.12.13.23...16.17..9.19.20.22.23.14

%Y Cf. A264244.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 09 2015