n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 9 |
4 | 162 |
5 | 1845 |
6 | 17262 |
7 | 144945 |
8 | 1138194 |
9 | 8548029 |
10 | 62230230 |
11 | 442977705 |
12 | 3101305338 |
13 | 21442016565 |
14 | 146833223166 |
15 | 998073454689 |
16 | 6745063632354 |
17 | 45376569607725 |
18 | 304167049525926 |
19 | 2033050559738265 |
20 | 13557845469637962 |
[0,0,9,162,1845,17262,144945,1138194,8548029, 62230230,442977705,3101305338,21442016565, 146833223166,998073454689,6745063632354, 45376569607725,304167049525926,2033050559738265, 13557845469637962] |