A252992 - OEIS

%I #4 Dec 25 2014 13:50:28

%S 291448,4486592,80232248,1564485159,30940948009,618832488265,

%T 12432368877884,250255753857694,5041787244222098,101631445454212323,

%U 2049184800689121326,41322113536941980635,833338675294493304917

%N Number of (n+2)X(6+2) 0..2 arrays with every consecutive three elements in every row and column having exactly 2 distinct values, in every diagonal 1 or 2 distinct values, in every antidiagonal 2 or 3 distinct values, and new values 0 upwards introduced in row major order

%C Column 6 of A252993

%H R. H. Hardin, <a href="/A252992/b252992.txt">Table of n, a(n) for n = 1..35</a>

%e Some solutions for n=1

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 25 2014