A252880 - OEIS

A252880

Number of (n+2)X(4+2) 0..2 arrays with every consecutive three elements in every row having 2 or 3 distinct values, in every column 1 or 2 distinct values, in every diagonal 2 distinct values, and in every antidiagonal 2 distinct values, and new values 0 upwards introduced in row major order

%I #4 Dec 24 2014 09:03:30

%S 211881,1723377,18443090,225544537,2937661429,38915852537,

%T 519647556034,6964313043452,93477448145117,1255833489013735,

%U 16880013708871116,226940053379538005,3051416477193106356,41031467134019707877

%N Number of (n+2)X(4+2) 0..2 arrays with every consecutive three elements in every row having 2 or 3 distinct values, in every column 1 or 2 distinct values, in every diagonal 2 distinct values, and in every antidiagonal 2 distinct values, and new values 0 upwards introduced in row major order

%C Column 4 of A252882

%H R. H. Hardin, <a href="/A252880/b252880.txt">Table of n, a(n) for n = 1..36</a>

%e Some solutions for n=1

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 24 2014