%I #5 Mar 31 2012 12:37:29

%S 1,16,1125,63504,2080800,92160000,4045204800,171889843216,

%T 7330747451944,316825404168100,13575541351218337,583084349120160000,

%U 25065468339217054272,1077387582576682598400,46295580843818152835625

%N Number of nX6 array permutations with every element making zero or one right-handed knight moves (out 2, right 1)

%C Column 6 of A209543

%H R. H. Hardin, <a href="/A209541/b209541.txt">Table of n, a(n) for n = 1..132</a>

%e Some solutions for n=4

%e ..0..9.13.11..4..5....0..1.13..3..4.16....0.12.10.14..4..5....8..1..2.11.15..5

%e ..6..7..8..1..2.22....6..7.19..9..2.11....6..7.16.20.21.22....6.18..0.20.10..3

%e .20.21..3.23.16.17...20.21.22.23..5.17....1..2..3.15..8.17...12.21.22..4.16.17

%e .18.19.12.10.14.15...18..8.12.10.14.15...18.19..9.13.11.23....7.19..9.13.14.23

%K nonn

%O 1,2

%A _R. H. Hardin_ Mar 10 2012