n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 3 |
4 | 10 |
5 | 25 |
6 | 161 |
7 | 721 |
8 | 5706 |
9 | 40881 |
10 | 385687 |
11 | 3628801 |
12 | 41268613 |
13 | 479001601 |
14 | 6324319717 |
15 | 87212177053 |
16 | 1317906346186 |
17 | 20922789888001 |
18 | 357099708702023 |
19 | 6402373705728001 |
20 | 121882752536893635 |
21 | 2432928081076384321 |
22 | 51140835669924352717 |
[1,2,3,10,25,161,721,5706,40881,385687,3628801, 41268613,479001601,6324319717,87212177053, 1317906346186,20922789888001,357099708702023, 6402373705728001,121882752536893635, 2432928081076384321,51140835669924352717] |