A235005 - OEIS

A235005

Number of (n+1) X (4+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

%I #6 Jun 20 2022 00:44:26

%S 104338,1049470,11587376,162585790,2432380948,40037217640,

%T 676947457572,11824787869510,208878010076942,3736584044188300,

%U 67274015119680910,1219544630997859452,22219457252029643404,406909415794274700932

%N Number of (n+1) X (4+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

%H R. H. Hardin, <a href="/A235005/b235005.txt">Table of n, a(n) for n = 1..83</a>

%e Some solutions for n=1:

%e 7 1 2 0 6 3 2 4 7 5 2 3 0 1 2 3 1 2 5 7

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

%Y Column 4 of A235007.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 02 2014