n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 17400 |
3 | 645120 |
4 | 8699640 |
5 | 64266240 |
6 | 334145760 |
7 | 1327902720 |
8 | 4450873080 |
9 | 12747325440 |
10 | 33162177744 |
11 | 77585418240 |
12 | 171110020320 |
13 | 348920586240 |
14 | 685157000640 |
15 | 1264980234240 |
16 | 2278793539320 |
17 | 3901915054080 |
[1,0,17400,645120,8699640,64266240,334145760, 1327902720,4450873080,12747325440,33162177744, 77585418240,171110020320,348920586240, 685157000640,1264980234240,2278793539320, 3901915054080] |