

A235250


Number of (n+1) X (n+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 7, with no adjacent elements equal (constantstress tilted 1 X 1 tilings).


0




OFFSET

1,1


COMMENTS



LINKS



EXAMPLE

Some solutions for n=3:
5 4 5 3 1 4 2 6 5 1 6 0 0 4 1 3 1 7 3 6
0 6 0 5 4 0 5 2 1 4 2 3 4 1 5 0 3 2 5 1
5 4 5 3 0 3 1 5 6 2 7 1 2 6 3 5 0 6 2 5
0 6 0 5 4 0 5 2 4 7 5 6 5 2 6 1 3 2 5 1


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



