n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 2 |
3 | 9 |
4 | 68 |
5 | 735 |
6 | 10332 |
7 | 178276 |
8 | 3639680 |
9 | 85750461 |
10 | 2289322710 |
11 | 68298539441 |
12 | 2251768422840 |
13 | 81301875813340 |
14 | 3190478732975744 |
15 | 135209859332836905 |
16 | 6154229137942791184 |
17 | 299422872446882413387 |
18 | 15507211446546229257948 |
[0,1,2,9,68,735,10332,178276,3639680,85750461, 2289322710,68298539441,2251768422840, 81301875813340,3190478732975744, 135209859332836905,6154229137942791184, 299422872446882413387,15507211446546229257948] |