A252920 - OEIS

%I #4 Dec 24 2014 17:11:32

%S 35674,418853,5247300,67554413,904486202,12006682353,160456041308,

%T 2161866908346,29002697628640,389999512255547,5251871898866981,

%U 70639675506138194,950670868788010336,12799386451710340286

%N Number of (3+2)X(n+2) 0..3 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 Row 3 of A252917

%H R. H. Hardin, <a href="/A252920/b252920.txt">Table of n, a(n) for n = 1..41</a>

%e Some solutions for n=1

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 24 2014