A203502 - OEIS

%I #5 Mar 31 2012 12:36:57

%S 1,29701,31795165,17549687172,8828365834694,4878810545594780,

%T 2766231303166191786,1536803068353977319009,848104681813384557202316,

%U 470048824818856993446144263,260982207064173186292604340629

%N Number of nX4 0..6 arrays with every nonzero element less than or equal to some NW, E or S neighbor

%C Column 4 of A203506

%H R. H. Hardin, <a href="/A203502/b203502.txt">Table of n, a(n) for n = 1..149</a>

%e Some solutions for n=5

%e ..3..2..4..3....6..3..1..3....1..6..3..0....3..4..2..6....1..3..4..6

%e ..5..3..4..3....6..3..4..3....0..6..4..2....2..4..1..6....3..0..2..6

%e ..6..5..4..3....6..4..4..3....5..6..2..5....1..4..1..6....3..1..4..6

%e ..6..3..6..4....6..0..6..1....4..6..5..5....4..4..6..6....6..2..6..6

%e ..6..6..6..6....6..6..6..6....4..6..6..5....2..6..6..6....6..6..0..6

%K nonn

%O 1,2

%A _R. H. Hardin_ Jan 02 2012