n | a(n) |
---|---|
1 | 1 |
2 | 6 |
3 | 43 |
4 | 308 |
5 | 2399 |
6 | 19669 |
7 | 166237 |
8 | 1440406 |
9 | 12711702 |
10 | 113766208 |
11 | 1029523130 |
12 | 9401993203 |
13 | 86516416092 |
14 | 801235499451 |
[1,6,43,308,2399,19669,166237,1440406,12711702, 113766208,1029523130,9401993203,86516416092, 801235499451] |