NOA 7.0: Construct mixed-level OAs and near-OAs
(c) 2014 Design Computing (designcomputing.net/)

Note: Best L(9^1 2^8) in 18 runs.

Try	iter	f	E(d^2)*	d^2max	Np	A2	D-eff
4	23	28	0.7778	1 (28)	28	0.3457	0.9846

*Reaches the lower bound.

Array for try 4 using seed -415570802:

  3  1  0  0  0  0  1  1  1
  5  1  0  0  1  0  0  0  0
  1  0  0  0  1  1  1  0  1
  4  0  1  0  1  0  1  1  0
  7  1  1  0  0  1  1  0  0
  8  0  0  0  0  1  0  1  0
  2  1  0  1  1  1  1  1  0
  5  0  1  1  0  1  1  1  1
  3  0  1  1  1  1  0  0  0
  7  0  0  1  1  0  0  1  1
  6  1  1  0  0  0  1  0  0
  8  1  1  1  1  0  1  0  1
  0  1  1  0  1  1  0  1  1
  1  1  1  1  0  0  0  1  0
  2  0  1  0  0  0  0  0  1
  0  0  0  1  0  0  1  0  0
  4  1  0  1  0  1  0  0  1
  6  0  0  1  1  1  0  1  1

d^2 matrix:

0	0	0	0	0	0	0	0	0	
	0	1	1	1	1	1	1	1	
		0	1	1	1	1	1	1	
			0	1	1	1	1	1	
				0	1	1	1	1	
					0	1	1	1	
						0	1	1	
							0	1	
								0	

Cramer's V matrix:

0	0	0	0	0	0	0	0	0	
	0	0.1111	0.1111	0.1111	0.1111	0.1111	0.1111	0.1111	
		0	0.1111	0.1111	0.1111	0.1111	0.1111	0.1111	
			0	0.1111	0.1111	0.1111	0.1111	0.1111	
				0	0.1111	0.1111	0.1111	0.1111	
					0	0.1111	0.1111	0.1111	
						0	0.1111	0.1111	
							0	0.1111	
								0	

Note: NOA used 0.018 seconds.