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A235075 Number of (n+1) X (4+1) 0..7 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). 1

%I #7 Jun 19 2022 23:24:00

%S 79848,644188,5686836,55735596,552618120,5629225056,57334595276,

%T 593260934340,6129703359580,64276108512888,672668603855416,

%U 7148987959764848,75769668771384436,816248960318927192

%N Number of (n+1) X (4+1) 0..7 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).

%H R. H. Hardin, <a href="/A235075/b235075.txt">Table of n, a(n) for n = 1..89</a>

%e Some solutions for n=1:

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

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

%Y Column 4 of A235078.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 03 2014

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Last modified April 24 18:17 EDT 2024. Contains 371962 sequences. (Running on oeis4.)