n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 36 |
4 | 176 |
5 | 912 |
6 | 4928 |
7 | 27472 |
8 | 156864 |
9 | 912832 |
10 | 5394176 |
11 | 32282240 |
12 | 195264000 |
13 | 1191825920 |
14 | 7331457024 |
15 | 45406194944 |
16 | 282896763904 |
17 | 1771868302336 |
18 | 11150040870912 |
19 | 70461597988864 |
20 | 446971590516736 |
21 | 2845144452292608 |
[1,2,8,36,176,912,4928,27472,156864,912832, 5394176,32282240,195264000,1191825920,7331457024, 45406194944,282896763904,1771868302336, 11150040870912,70461597988864,446971590516736, 2845144452292608] |