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Number of (n+1) X (7+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 5 (constant-stress 1 X 1 tilings).
0

%I #5 Jun 20 2022 00:45:24

%S 3196416,5385236,9134920,19258400,40731576,104366624,265716040,

%T 789826592,2311358136,7703580416,25101251080

%N Number of (n+1) X (7+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 5 (constant-stress 1 X 1 tilings).

%e Some solutions for n=1:

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

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

%Y Column 7 of A234690.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 29 2013