A234377 - OEIS

%I #4 Dec 25 2013 09:48:57

%S 245837376,107611542837,45066201971526,18662305835280147,

%T 7686715868506969433,3160465819880176888222,1298519548083052661585800,

%U 533376343057660096808110625,219066299067369539751011006096

%N Number of (n+2)X(4+2) 0..2 arrays with no increasing sequence of length 3 horizontally or diagonally downwards

%C Column 4 of A234380

%H R. H. Hardin, <a href="/A234377/b234377.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

%e ..0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 25 2013