A209017 - OEIS

%I #5 Mar 31 2012 12:37:25

%S 972,1901964,3707858104,7224768704460,14081479775124768,

%T 27444816617702590210,53490209804089514438574,

%U 104252853354306374638934760,203189693440653459494447382012

%N Number of nX6 0..3 arrays with no element equal the average of immediate neighbors vertically above, diagonally above and left, and horizontally left of it

%C Column 6 of A209019

%H R. H. Hardin, <a href="/A209017/b209017.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 04 2012