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A241355
Number of nX7 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4
0
20, 103, 641, 5663, 32942, 247664, 1904754, 12340892, 104529676, 729080777, 5436001228, 44321599723
OFFSET
1,1
COMMENTS
Column 7 of A241356
EXAMPLE
Some solutions for n=3
..2..3..3..3..2..3..3....2..3..3..2..3..3..2....3..2..3..3..2..3..3
..2..1..1..1..2..2..2....2..1..1..2..1..1..1....3..1..2..1..2..2..1
..3..2..2..0..0..1..3....3..2..3..2..0..3..3....2..3..0..2..0..0..2
CROSSREFS
Sequence in context: A077757 A126859 A071334 * A220207 A189950 A045768
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 20 2014
STATUS
approved