n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 25 |
4 | 378 |
5 | 8460 |
6 | 252087 |
7 | 9392890 |
8 | 420142350 |
9 | 21927528948 |
10 | 1307723670020 |
11 | 87712176219801 |
12 | 6534001434836758 |
13 | 535159878432210000 |
14 | 47792303301224799288 |
15 | 4621416976280491118910 |
16 | 481020078381722064175750 |
[1,1,3,25,378,8460,252087,9392890,420142350, 21927528948,1307723670020,87712176219801, 6534001434836758,535159878432210000, 47792303301224799288,4621416976280491118910, 481020078381722064175750] |