

A234231


Number of (n+1) X (4+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3 (constantstress 1 X 1 tilings).


1



449880, 7024396, 108591688, 1709929028, 26695387444, 424316463256, 6683714234372, 107392220427904, 1707887729007672, 27776485661813004, 446386639744976512, 7358199411212748552, 119609164298524638804
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OFFSET

1,1


LINKS



EXAMPLE

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


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



