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A235106 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 4, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings). 0

%I #6 Jun 19 2022 20:21:06

%S 1025770,2047890,4256548,9680994,22754394,57035088,147069470,

%T 398750942,1109052788,3214407394,9538239362,29310492288,92087563578,

%U 298251455546,986587292812,3352471090498

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

%e Some solutions for n=1:

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

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

%Y Column 7 of A235107.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 03 2014

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Last modified April 23 06:45 EDT 2024. Contains 371906 sequences. (Running on oeis4.)