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A234657 Number of (n+1) X (7+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings). 0

%I #5 Jun 20 2022 19:43:12

%S 1434624,2414992,4196144,8731840,18735792,46510768,118121744,

%T 335161744,966751344,3047922832,9726377744,33467842000,116063388912

%N Number of (n+1) X (7+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings).

%e Some solutions for n=1:

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

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

%Y Column 7 of A234658.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 29 2013

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Last modified April 19 04:35 EDT 2024. Contains 371782 sequences. (Running on oeis4.)