A203098 - OEIS

%I #5 Mar 31 2012 12:36:55

%S 144,143510,87531478,48260497186,27467664499412,15712898935252156,

%T 8968410661761080882,5118067454812170831280,2921169534343554102418252,

%U 1667264462683367539615630114,951588418839778093530014930652

%N Number of nX5 0..3 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor

%C Column 5 of A203101

%H R. H. Hardin, <a href="/A203098/b203098.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Dec 29 2011