A264312 - OEIS

%I #4 Nov 11 2015 09:57:38

%S 1117,137703,18898817,2478206839,322126444477,41578820903929,

%T 5358897006142696,690279721519311104,88890001539922854149,

%U 11445732145478719893045,1473738883780247973828325

%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 0,1 1,0 -1,-2 or 0,2.

%C Column 7 of A264313.

%H R. H. Hardin, <a href="/A264312/b264312.txt">Table of n, a(n) for n = 1..184</a>

%e Some solutions for n=2

%e ..0..1..2.13..4.15..5..6...10.11.12..1..3..5..4..6....0..1.12.13..4..3..6..7

%e .18..9..8..3.11.23.14..7....0.19..2.21.22.23.13..7...18..9..2.10.22..5.14.15

%e .16.17.10.19.12.20.22.21....8..9.16.17.18.20.14.15....8.16.17.11.19.21.20.23

%Y Cf. A264313.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 11 2015