A234173 - OEIS

A234173

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 1 (constant-stress 1 X 1 tilings).

%I #6 Jun 19 2022 01:52:28

%S 517104,20235390,877700068,40217750640,1898311922200,91205700777916,

%T 4425866604068816,216182302672158584,10596237458369398636,

%U 520784237104391176680,25625311461818632717448,1262549904811344180417180

%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 1 (constant-stress 1 X 1 tilings).

%H R. H. Hardin, <a href="/A234173/b234173.txt">Table of n, a(n) for n = 1..56</a>

%e Some solutions for n=1:

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

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

%Y Column 4 of A234175.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 20 2013