n | a(n) |
---|---|
0 | 1 |
1 | 9 |
2 | 72 |
3 | 568 |
4 | 4473 |
5 | 35217 |
6 | 277264 |
7 | 2182896 |
8 | 17185905 |
9 | 135304345 |
10 | 1065248856 |
11 | 8386686504 |
12 | 66028243177 |
13 | 519839258913 |
14 | 4092685828128 |
15 | 32221647366112 |
16 | 253680493100769 |
17 | 1997222297440041 |
18 | 15724097886419560 |
19 | 123795560793916440 |
[1,9,72,568,4473,35217,277264,2182896,17185905, 135304345,1065248856,8386686504,66028243177, 519839258913,4092685828128,32221647366112, 253680493100769,1997222297440041, 15724097886419560,123795560793916440] |