A241279 Number of n X 3 0..3 arrays with no element equal to one plus the sum of elements to its left or zero plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4.

4, 5, 41, 236, 1615, 12356, 96171, 761754, 6079503, 48655224, 389953075, 3127470262, 25091008666, 201333623389, 1615666305519, 12966002651979, 104056784269403, 835102517412497, 6702114259119338, 53787979810054439

Offset: 1

Author

R. H. Hardin, Apr 18 2014

Keywords

• nonn

Comments

Column 3 of A241283.

Examples

			Some solutions for n=4
..3..2..3....3..2..3....3..2..3....3..2..3....3..3..2....3..2..3....3..2..3
..2..1..2....2..1..2....2..1..2....2..1..2....2..1..3....0..3..2....0..3..2
..2..2..0....0..0..2....0..0..0....2..2..0....3..1..2....0..2..0....0..2..2
..0..2..0....2..0..0....0..2..2....0..0..3....2..2..2....0..0..0....0..0..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210

Crossrefs

Cf. A241283.