A252901 - OEIS

A252901

Number of (n+2)X(3+2) 0..3 arrays with every consecutive three elements in every row and column having exactly two distinct values, and new values 0 upwards introduced in row major order

%I #4 Dec 24 2014 15:35:54

%S 19320,306680,4385530,66702186,990142582,14924920644,223188511528,

%T 3356288767614,50316155376656,755701431331706,11339970860065408,

%U 170249371855057578,2555320401273992394,38360187030527862622

%N Number of (n+2)X(3+2) 0..3 arrays with every consecutive three elements in every row and column having exactly two distinct values, and new values 0 upwards introduced in row major order

%C Column 3 of A252904

%H R. H. Hardin, <a href="/A252901/b252901.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 24 2014