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A234448 Number of (n+1) X (5+1) 0..4 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 19 2022 02:40:08

%S 428800,15269704,588663528,23647980136,963859893408,39720806964788,

%T 1639385463803776,67993371547921628,2815853396337809696,

%U 117034724272880522212,4853112656114544908560,201930635008621124994776

%N Number of (n+1) X (5+1) 0..4 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="/A234448/b234448.txt">Table of n, a(n) for n = 1..63</a>

%e Some solutions for n=1:

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

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

%Y Column 5 of A234450.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 26 2013

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Last modified April 19 05:19 EDT 2024. Contains 371782 sequences. (Running on oeis4.)