n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 12 |
4 | 124 |
5 | 1800 |
6 | 33606 |
7 | 766976 |
8 | 20689208 |
9 | 643996800 |
10 | 22719618250 |
11 | 895853071872 |
12 | 39043448067636 |
13 | 1863697724715008 |
14 | 96698693656306574 |
15 | 5418685033626992640 |
16 | 326140667283301420912 |
17 | 20983722785088536346624 |
18 | 1437191703493403790787218 |
19 | 104400577820040681757736960 |
[1,2,12,124,1800,33606,766976,20689208,643996800, 22719618250,895853071872,39043448067636, 1863697724715008,96698693656306574, 5418685033626992640,326140667283301420912, 20983722785088536346624,1437191703493403790787218, 104400577820040681757736960] |