SPLIT 8.0: Program for Constructing D-efficient Equivalent-Estimation 2nd-order Split-Plot Designs
(c) 2015 Design Computing (http://designcomputing.net/)

Note: Best design for 2 WP and 2 SP factors in 9 WPs of size 5

Try	iter	f	tr(C'C)	det*	det
25	15	0	0	0.2138	5.5987E14

Factor levels for try 25 using seed 1131614789 (WP factors are in column 1-2):

-1	-1	0	0	
-1	-1	1	1	
-1	-1	1	-1	
-1	-1	-1	-1	
-1	-1	-1	1	

1	-1	-1	-1	
1	-1	-1	1	
1	-1	0	0	
1	-1	1	1	
1	-1	1	-1	

-1	1	1	1	
-1	1	1	-1	
-1	1	0	0	
-1	1	-1	-1	
-1	1	-1	1	

1	1	-1	-1	
1	1	0	0	
1	1	-1	1	
1	1	1	1	
1	1	1	-1	

-1	0	1	-1	
-1	0	0	0	
-1	0	1	1	
-1	0	-1	-1	
-1	0	-1	1	

1	0	1	1	
1	0	0	0	
1	0	-1	1	
1	0	-1	-1	
1	0	1	-1	

0	-1	-1	0	
0	-1	1	0	
0	-1	0	1	
0	-1	0	-1	
0	-1	0	0	

0	1	0	1	
0	1	-1	0	
0	1	1	0	
0	1	0	-1	
0	1	0	0	

0	0	0	-1	
0	0	0	1	
0	0	1	0	
0	0	0	0	
0	0	-1	0	


X'*inv(V)*X

7.5	5	5	5	5	0	0	0	0	0	0	0	0	0	0	
	5	3.3333	4	4	0	0	0	0	0	0	0	0	0	0	
		5	3.3333	3.3333	0	0	0	0	0	0	0	0	0	0	
			12	6	0	0	0	0	0	0	0	0	0	-0	
				12	0	0	0	0	0	0	0	0	0	-0	
					5	0	0	0	0	0	0	0	0	0	
						5	0	0	0	0	0	0	0	0	
							30	0	0	0	0	0	0	0	
								30	0	0	0	0	0	0	
									3.3333	0	0	0	0	0	
										24	0	0	0	0	
											24	0	0	0	
												20	0	0	
													20	0	
														24	

inv(X'*inv(V)*X)

0.6963	-0.3704	-0.4	-0.037	-0.037	0	0	0	0	0	0	0	0	0	-0	
	0.6296	-0	-0.037	-0.037	0	0	0	0	0	0	0	0	0	-0	
		0.6	0	0	0	0	0	0	0	0	0	0	-0	0	
			0.1296	-0.037	0	0	0	0	0	0	0	0	-0	0	
				0.1296	0	0	0	0	0	0	0	0	-0	0	
					0.2	0	0	0	0	0	0	0	0	-0	
						0.2	0	0	0	0	0	0	0	-0	
							0.0333	0	0	0	0	0	0	-0	
								0.0333	0	0	0	0	0	-0	
									0.3	0	0	0	0	-0	
										0.0417	0	0	0	-0	
											0.0417	0	0	-0	
												0.05	0	-0	
													0.05	-0	
														0.0417	

Note: SPLIT used 0.045 seconds.