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A234887 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, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings). 1

%I

%S 9192,40856,163352,884976,4318800,26272908,138216800,902409352,

%T 4907082840,33616093680,185936954632,1318067732684,7361429326200,

%U 53481533152552,300446060684776,2221662510752072,12526677175945288

%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, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

%H R. H. Hardin, <a href="/A234887/b234887.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3:

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

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

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

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

%Y Column 5 of A234890.

%K nonn,changed

%O 1,1

%A _R. H. Hardin_, Jan 01 2014

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Last modified June 27 03:29 EDT 2022. Contains 354888 sequences. (Running on oeis4.)