A235067 - OEIS

A235067

Number of (n+1) X (4+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

%I #7 Jun 19 2022 23:39:12

%S 22576,125196,727376,4548100,28470232,181669172,1158928396,7478244692,

%T 48319836696,315434737336,2063833870156,13644687152612,90442977075608,

%U 606077571449384,4071641959314636,27668777784987580,188421295433503328

%N Number of (n+1) X (4+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

%H R. H. Hardin, <a href="/A235067/b235067.txt">Table of n, a(n) for n = 1..164</a>

%e Some solutions for n=2:

%e 2 0 4 3 5 1 2 0 4 2 4 0 2 1 6 4 5 1 5 1

%e 0 1 2 4 3 5 3 4 5 6 3 2 1 3 5 6 4 3 4 3

%e 1 5 3 2 4 1 2 0 4 2 2 4 0 5 4 5 6 2 6 2

%Y Column 4 of A235071.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 03 2014