n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 24 |
5 | 120 |
6 | 720 |
7 | 5040 |
8 | 30960 |
9 | 172200 |
10 | 899064 |
11 | 4553166 |
12 | 22934774 |
13 | 116914351 |
14 | 610093513 |
15 | 3222826972 |
16 | 17101449940 |
17 | 90706002192 |
18 | 479654768640 |
19 | 2527274267136 |
20 | 13280313508416 |
21 | 69734129749632 |
22 | 366283822765632 |
23 | 1925290900630896 |
24 | 10126754515065868 |
[1,1,2,6,24,120,720,5040,30960,172200,899064, 4553166,22934774,116914351,610093513,3222826972, 17101449940,90706002192,479654768640, 2527274267136,13280313508416,69734129749632, 366283822765632,1925290900630896, 10126754515065868] |