A222888 - OEIS

A222888

Number of nX5 0..2 arrays with exactly floor(nX5/2) elements equal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order

%I #4 Mar 08 2013 18:54:56

%S 16,1222,138026,24893100,2737507523,518031070610,57938967907855,

%T 11279149298276340,1275220409032117490,252490047545846068708,

%U 28751346406380329048124,5756690997936847064344575

%N Number of nX5 0..2 arrays with exactly floor(nX5/2) elements equal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order

%C Column 5 of A222889

%H R. H. Hardin, <a href="/A222888/b222888.txt">Table of n, a(n) for n = 1..18</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 08 2013