n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 12 |
4 | 55 |
5 | 273 |
6 | 1425 |
7 | 7695 |
8 | 42576 |
9 | 239925 |
10 | 1371555 |
11 | 7931817 |
12 | 46310127 |
13 | 272559558 |
14 | 1615163592 |
15 | 9627985773 |
16 | 57688721354 |
17 | 347228163630 |
[1,3,12,55,273,1425,7695,42576,239925,1371555, 7931817,46310127,272559558,1615163592,9627985773, 57688721354,347228163630] |