n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 9 |
3 | 1 |
4 | 1350 |
5 | 1 |
6 | 52920 |
7 | 1 |
8 | 1134000 |
9 | 1 |
10 | 11290752 |
11 | 1 |
12 | 74373979680000 |
13 | 1 |
14 | 8006169600 |
15 | 1 |
16 | 12147360825600000 |
17 | 1 |
18 | 56625794240311296000 |
19 | 1 |
20 | 3311787858630451200000 |
21 | 1 |
22 | 451287524451778560000 |
23 | 1 |
24 | 48168123888308960600064000000 |
25 | 1 |
26 | 10738530029998374912000000 |
27 | 1 |
[1,1,9,1,1350,1,52920,1,1134000,1,11290752,1, 74373979680000,1,8006169600,1,12147360825600000,1, 56625794240311296000,1,3311787858630451200000,1, 451287524451778560000,1, 48168123888308960600064000000,1, 10738530029998374912000000,1] |