A240158 Number of 6Xn 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 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.
15, 144, 825, 22412, 108201, 1608415, 12812998, 70360014, 694603093, 4788445889, 30873934965
Offset: 1
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Examples
Some solutions for n=3 ..3..2..3....3..2..3....2..2..3....2..2..3....3..3..2....2..2..3....3..3..2 ..3..2..1....3..1..2....0..2..1....0..2..1....2..1..2....0..2..2....2..1..2 ..2..2..3....2..1..3....2..2..3....2..2..3....0..0..3....0..3..3....0..0..2 ..2..0..1....2..2..3....0..2..2....0..2..1....0..2..1....0..2..2....0..3..1 ..0..0..2....0..2..2....0..0..3....0..2..2....0..2..2....0..3..1....3..3..1 ..2..0..2....0..0..3....3..2..3....2..0..2....0..0..2....0..2..1....3..2..3
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