n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 2 |
3 | 666 |
4 | 1047436 |
5 | 30517547395 |
6 | 21936950639192784 |
7 | 459986536544739894613595 |
8 | 324518553658426726783148869733112 |
[0,0,2,666,1047436,30517547395,21936950639192784, 459986536544739894613595, 324518553658426726783148869733112] |