login
Number of (n+2)X(4+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 4 or more
1

%I #4 Dec 09 2014 21:19:29

%S 2525037,216245728,20861600041,1840787119956,164065118611251,

%T 14820877153549049,1334288403583213012,120005649204594579167,

%U 10802330861739344082166,972390283849153112134282

%N Number of (n+2)X(4+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 4 or more

%C Column 4 of A251858

%H R. H. Hardin, <a href="/A251857/b251857.txt">Table of n, a(n) for n = 1..33</a>

%e Some solutions for n=1

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 09 2014