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A235073 Number of (n+1) X (2+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

%S 1828,12228,86704,644188,4832976,36598068,278216484,2124989472,

%T 16281513720,125246817248,966215387976,7481473215920,58076742720512,

%U 452383706822008,3531578851849512,27656665567114376,216990167306048568

%N Number of (n+1) X (2+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="/A235073/b235073.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A235073/a235073.txt">Empirical recurrence of order 73</a>

%F Empirical recurrence of order 73 (see link above).

%e Some solutions for n=3:

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

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

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

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

%Y Column 2 of A235078.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 03 2014

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Last modified September 26 15:09 EDT 2022. Contains 357000 sequences. (Running on oeis4.)