n | a(n) |
---|---|
1 | 0 |
2 | 504 |
3 | 10560 |
4 | 103800 |
5 | 671448 |
6 | 3348840 |
7 | 14014320 |
8 | 51729072 |
9 | 173858832 |
10 | 543596760 |
11 | 1605266976 |
12 | 4526990088 |
13 | 12293408616 |
[0,504,10560,103800,671448,3348840,14014320, 51729072,173858832,543596760,1605266976, 4526990088,12293408616] |