A183416 Number of nX3 0..2 arrays with each sum of a(1..i,1..j) no greater than i*j.

13, 249, 5257, 118128, 2748326, 65521060, 1589310971, 39061152272, 969912553822, 24282796177101, 612070344280674, 15515224313870804, 395180940568952691, 10106978903439648223, 259417022176683830195, 6679368104700699189613

Offset: 1

Author

R. H. Hardin Jan 04 2011

Keywords

• nonn

Comments

Column 3 of A183419

Examples

			Some solutions for 4X3
..1..0..0....0..1..2....0..1..2....1..1..0....0..0..1....1..0..2....1..0..1
..1..0..0....1..0..1....0..1..1....1..0..2....2..1..0....1..2..0....1..0..2
..1..2..2....0..0..2....1..0..0....1..0..2....0..1..2....1..0..0....0..2..2
..1..1..0....1..1..1....2..1..0....1..2..0....2..1..1....1..0..1....0..2..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..62