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A234682 Number of (n+1) X (n+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 #6 Jun 20 2022 19:50:36

%S 232,4416,49480,531984,4224328,37361280,265716040,2168371104

%N Number of (n+1) X (n+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=3:

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

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

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

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

%Y Diagonal of A234690.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 29 2013

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Last modified April 24 18:05 EDT 2024. Contains 371962 sequences. (Running on oeis4.)