|
%I #6 Feb 22 2020 20:54:24
%S 11,726,22869,835135,29846373,1074195735,38585324821,1386815731346,
%T 49835668719324,1790952554181415,64360800888516224,
%U 2312920275315600518,83118816237627091277,2987020411865810161864,107343805323748931471929
%N Number of nX4 0..2 arrays with no occurrence of three equal elements in a row horizontally, vertically or nw-to-se diagonally, and new values 0..2 introduced in row major order
%C Column 4 of A204705
%H R. H. Hardin, <a href="/A204701/b204701.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=5
%e ..0..1..0..2....0..1..2..0....0..1..0..2....0..1..0..1....0..1..2..2
%e ..2..2..0..1....1..2..2..0....1..2..2..1....2..2..1..0....0..0..1..2
%e ..2..0..1..1....0..1..1..2....1..0..1..1....1..1..0..0....1..2..2..0
%e ..0..1..0..2....0..1..2..1....0..0..2..0....2..0..0..1....1..0..0..1
%e ..1..2..2..1....2..2..0..0....0..2..0..0....0..1..1..0....2..2..1..2
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 18 2012
| 