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A241441
Number of 7Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4
0
24, 9, 1005, 20690, 218885, 4136727, 79901137, 1058201862, 16609740868
OFFSET
1,1
COMMENTS
Row 7 of A241435
EXAMPLE
Some solutions for n=3
..3..3..2....3..3..2....2..2..3....2..2..3....3..2..3....2..2..3....3..3..2
..2..2..2....2..2..0....2..1..3....2..1..3....2..1..3....2..1..3....2..2..2
..3..1..3....3..3..2....3..1..2....3..1..0....3..1..2....3..3..2....3..1..2
..2..1..2....2..0..2....2..2..2....3..2..0....2..0..0....2..1..2....3..1..2
..2..1..3....2..0..2....3..1..2....2..2..2....2..0..0....3..1..2....2..2..2
..3..3..0....2..0..0....2..2..2....2..0..2....3..3..0....3..2..0....3..1..2
..2..2..0....2..0..0....2..1..2....2..0..0....2..2..0....2..0..2....3..2..0
CROSSREFS
Sequence in context: A040557 A040556 A070663 * A343389 A267024 A259337
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 22 2014
STATUS
approved