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A202133
Number of zero-sum nX4 -3..3 arrays with every element equal to at least one horizontal or vertical neighbor
0
7, 1205, 135315, 22197147, 3628653641
OFFSET
1,1
COMMENTS
Column 4 of A202134
EXAMPLE
Some solutions for n=2
..3..3..3.-3....3..3.-3.-3...-3.-3..0..3....1..1..1.-3....0.-1..3.-2
.-1.-1.-1.-3...-3.-3..3..3....0..0..0..3....1..1..1.-3....0.-1..3.-2
CROSSREFS
Sequence in context: A203871 A373037 A144927 * A229431 A159994 A278178
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 11 2011
STATUS
approved