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A234886 Number of (n+1) X (4+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 1, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings). 1

%I

%S 2896,11984,43680,209740,884976,4616452,20512760,112743844,512846088,

%T 2929812696,13502550424,79476854244,369248890000,2223584184224,

%U 10383954125888,63603016362920,297999250816344,1847988056907872

%N Number of (n+1) X (4+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 1, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

%H R. H. Hardin, <a href="/A234886/b234886.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3:

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

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

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

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

%Y Column 4 of A234890.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 01 2014

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Last modified August 16 07:50 EDT 2022. Contains 356160 sequences. (Running on oeis4.)