n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 4 |
5 | 4 |
6 | 144 |
7 | 144 |
8 | 576 |
9 | 5184 |
10 | 518400 |
11 | 518400 |
12 | 2073600 |
13 | 2073600 |
14 | 101606400 |
15 | 914457600 |
16 | 14631321600 |
17 | 14631321600 |
18 | 526727577600 |
19 | 526727577600 |
20 | 52672757760000 |
21 | 52672757760000 |
22 | 6373403688960000 |
23 | 6373403688960000 |
24 | 917770131210240000 |
25 | 22944253280256000000 |
[1,1,1,4,4,144,144,576,5184,518400,518400,2073600, 2073600,101606400,914457600,14631321600, 14631321600,526727577600,526727577600, 52672757760000,52672757760000,6373403688960000, 6373403688960000,917770131210240000, 22944253280256000000] |