A235103 - OEIS

A235103

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 4, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

%I #7 Jun 19 2022 20:20:05

%S 12578,35354,101464,304746,937034,2978124,9680994,32349918,110399304,

%T 385970050,1376013714,5011652964,18582312010,70201181566,269458590752,

%U 1050901159562,4154691374234,16642155164228,67410127701802

%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 4, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

%H R. H. Hardin, <a href="/A235103/b235103.txt">Table of n, a(n) for n = 1..208</a>

%e Some solutions for n=3:

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

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

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

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

%Y Column 4 of A235107.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 03 2014