n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 61 |
5 | 4385 |
6 | 219435 |
7 | 9785650 |
8 | 423038910 |
9 | 18400152960 |
10 | 820149026970 |
11 | 37821215615040 |
12 | 1813429065435075 |
13 | 90623195098916480 |
14 | 4724647736141458125 |
15 | 257000193714640346880 |
16 | 14579739601017142299020 |
17 | 861991467355420222464000 |
[0,0,0,0,61,4385,219435,9785650,423038910, 18400152960,820149026970,37821215615040, 1813429065435075,90623195098916480, 4724647736141458125,257000193714640346880, 14579739601017142299020,861991467355420222464000] |