n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 72 |
3 | 2000 |
4 | 68600 |
5 | 2667168 |
6 | 112698432 |
7 | 5053029696 |
8 | 236860767000 |
9 | 11493303192800 |
10 | 573327757086656 |
11 | 29253930349198464 |
12 | 1521079361361956032 |
13 | 80361335659444000000 |
14 | 4304087536829486400000 |
15 | 233271979857187430688000 |
16 | 12774642558686527109607000 |
17 | 706008965215713532853436000 |
18 | 39337406606398593529683000000 |
[1,4,72,2000,68600,2667168,112698432,5053029696, 236860767000,11493303192800,573327757086656, 29253930349198464,1521079361361956032, 80361335659444000000,4304087536829486400000, 233271979857187430688000, 12774642558686527109607000, 706008965215713532853436000, 39337406606398593529683000000] |