A221850 - OEIS

A221850

Number of nX3 arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, without consecutive moves in the same direction

%I #5 Jan 27 2013 11:43:44

%S 6,302,10085,354670,12277568,426752551,14818941152,514719294830,

%T 17877010521736,620906972675376,21565339027443844,749008098922831183,

%U 26014567709115430632,903538668696429777028,31381728865914983789375

%N Number of nX3 arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, without consecutive moves in the same direction

%C Column 3 of A221852

%H R. H. Hardin, <a href="/A221850/b221850.txt">Table of n, a(n) for n = 1..27</a>

%e Some solutions for n=3

%e ..1..0..1....0..2..0....1..1..0....1..1..2....0..1..2....0..1..1....1..0..1

%e ..0..0..1....1..0..0....1..6..0....2..0..0....0..3..0....1..0..1....0..0..1

%e ..1..2..3....3..2..1....0..0..0....0..1..2....2..0..1....2..1..2....0..4..2

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 27 2013