n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 2 |
3 | 8 |
4 | 32 |
5 | 184 |
6 | 1104 |
7 | 8448 |
8 | 67584 |
9 | 648576 |
10 | 6485760 |
11 | 74972160 |
12 | 899665920 |
13 | 12174658560 |
14 | 170445219840 |
15 | 2643856588800 |
16 | 42301705420800 |
17 | 740051782041600 |
18 | 13320932076748800 |
19 | 259500083163955200 |
20 | 5190001663279104000 |
21 | 111422936937037824000 |
22 | 2451304612614832128000 |
[0,1,2,8,32,184,1104,8448,67584,648576,6485760, 74972160,899665920,12174658560,170445219840, 2643856588800,42301705420800,740051782041600, 13320932076748800,259500083163955200, 5190001663279104000,111422936937037824000, 2451304612614832128000] |