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A234704 Number of (n+1) X (n+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 6 (constant-stress 1 X 1 tilings). 0

%I

%S 322,7154,87698,1108418,9883666,104373122,850224914,8324205794

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

%e Some solutions for n=3:

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

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

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

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

%Y Diagonal of A234712.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 29 2013

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Last modified August 12 13:59 EDT 2022. Contains 356077 sequences. (Running on oeis4.)