n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 24 |
5 | 120 |
6 | 600 |
7 | 3000 |
8 | 15000 |
9 | 75000 |
10 | 375000 |
11 | 1875000 |
12 | 8981784 |
13 | 42195774 |
14 | 197451926 |
15 | 929043391 |
16 | 4418144281 |
17 | 21115063084 |
18 | 101076625300 |
19 | 483821382744 |
20 | 2314379964864 |
21 | 11064448856064 |
22 | 52869709237824 |
23 | 252527695995264 |
[1,2,6,24,120,600,3000,15000,75000,375000,1875000, 8981784,42195774,197451926,929043391,4418144281, 21115063084,101076625300,483821382744, 2314379964864,11064448856064,52869709237824, 252527695995264] |