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A234456 Number of (n+1) X (5+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 1 (constant-stress 1 X 1 tilings). 1

%I #6 Jun 20 2022 01:29:18

%S 1755520,86545688,4726887280,272404175456,16119111514696,

%T 968883628673536,58682694920811712,3573447469469256284,

%U 218058171173810327456,13336761965221447514244,815980276332612737066576

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

%H R. H. Hardin, <a href="/A234456/b234456.txt">Table of n, a(n) for n = 1..27</a>

%e Some solutions for n=1:

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

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

%Y Column 5 of A234458.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 26 2013

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)