A240267 Number of nX3 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, modulo 4.

10, 35, 118, 582, 2000, 8353, 37422, 135463, 580528, 2403439, 9094559, 38858731, 155489063, 610603047, 2566277060, 10164936522, 40839681679, 168734662196, 669445744507, 2718398151862, 11090164669401, 44257273047277

Offset: 1

Author

R. H. Hardin, Apr 03 2014

Keywords

• nonn

Comments

Column 3 of A240271

Examples

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

Links

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