n | a(n) |
---|---|
2 | 1 |
3 | 3 |
4 | 9 |
5 | 41 |
6 | 231 |
7 | 1551 |
8 | 12037 |
9 | 105861 |
10 | 1039539 |
11 | 11268059 |
12 | 133585089 |
13 | 1718984673 |
14 | 23857531519 |
15 | 355190381031 |
16 | 5646040979901 |
17 | 95432906354621 |
18 | 1709068974897867 |
19 | 32325104169244851 |
20 | 643869687410800249 |
21 | 13471540400560532889 |
22 | 295384662114697463319 |
[1,3,9,41,231,1551,12037,105861,1039539,11268059, 133585089,1718984673,23857531519,355190381031, 5646040979901,95432906354621,1709068974897867, 32325104169244851,643869687410800249, 13471540400560532889,295384662114697463319] |