nodes
| n       | n * (n-1)	 | n * log(n)        |
| ------- | ------------ | ----------------- | 
| 2	      | 2	         | 2                 |
| 4	      | 12	         | 8                 |
| 10	  | 90	         | 33.2192809488736  | 
| 100	  | 9900	     | 664.385618977473  |
| 1000	  | 999000	     | 9965.78428466209  |
| 10000	  | 99990000	 | 132877.123795495  |
| 100000  | 9999900000   | 1660964.04744368  |
| 1000000 | 999999000000 | 19931568.5693242  |