

A235257


Number of (n+1) X (7+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



600928, 1330480, 2873128, 7200188, 17480904, 47995084, 126993640, 373324260, 1053946488, 3264942732, 9696780840, 31291585876
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OFFSET

1,1


COMMENTS



LINKS



EXAMPLE

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


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



