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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 3, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).
0

%I #5 Jun 19 2022 02:33:20

%S 3167392,20896656,144439680,1158928396,9228249720,77175918060,

%T 639912767992,5481037968792,46648797716992,409125714780992

%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 3, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

%e Some solutions for n=1:

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

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

%Y Column 7 of A235071.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 03 2014