A234167 - OEIS

A234167

Number of (n+1) X (6+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2 (constant-stress 1 X 1 tilings).

%I #6 Jun 19 2022 01:48:29

%S 764190,8846884,99877680,1183467658,13865878254,171702282736,

%T 2098023535022,27538386579098,353610525268640,4972980047971518,

%U 67334078721083922,1018157155350964072,14484963145641873482

%N Number of (n+1) X (6+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2 (constant-stress 1 X 1 tilings).

%H R. H. Hardin, <a href="/A234167/b234167.txt">Table of n, a(n) for n = 1..23</a>

%e Some solutions for n=1:

%e 1 4 2 3 3 1 4 0 2 3 2 3 4 4 0 3 2 1 0 4 1

%e 0 1 1 4 2 2 3 0 4 3 0 3 2 4 1 2 3 4 1 3 2

%Y Column 6 of A234169.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 20 2013