%I #5 Mar 31 2012 12:36:14

%S 2,116,7264,295264,12838276,577290185,25631148992,1136766429824,

%T 50487034527632,2241979819401172,99549503635633660,

%U 4420377191555167852,196282145900912402736,8715672825193463217812,387009187279257877916264

%N Number of nX3 array permutations with each element moved but moved no more than a city block distance of two

%C Column 3 of A188981

%H R. H. Hardin, <a href="/A188977/b188977.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for 4X3

%e ..1..3..0....1..7..0....2..0..5....2..0..1....1..3..8....1..3..8....1..2..5

%e ..7..2.11....9..8.11....4..1.11....9..5..4....0..2..4....9..0..7....0..6.11

%e ..4..9.10....3..5..2...10..3..7....7..3..6....9..6.10...10..4..2....3..8.10

%e ..6..8..5....6..4.10....6..8..9...11..8.10...11..7..5...11..6..5....7..4..9

%K nonn

%O 1,1

%A _R. H. Hardin_ Apr 14 2011