n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 9 |
4 | 52 |
5 | 545 |
6 | 6366 |
7 | 98707 |
8 | 1700840 |
9 | 35405505 |
10 | 817958170 |
11 | 21500633891 |
12 | 618661892652 |
13 | 19636408658737 |
14 | 675144805723766 |
15 | 25147073628948195 |
16 | 1004734122294047056 |
17 | 42965745214637476097 |
18 | 1955039747566085781426 |
19 | 94404335950307686644163 |
20 | 4818562790963397438214100 |
[1,2,9,52,545,6366,98707,1700840,35405505, 817958170,21500633891,618661892652,19636408658737, 675144805723766,25147073628948195, 1004734122294047056,42965745214637476097, 1955039747566085781426,94404335950307686644163, 4818562790963397438214100] |