n | a(n) |
---|---|
2 | 3 |
3 | 9 |
4 | 52 |
5 | 291 |
6 | 1445 |
7 | 6420 |
8 | 32959 |
9 | 187727 |
10 | 1102665 |
11 | 6930612 |
12 | 46522650 |
13 | 320194002 |
14 | 2204132973 |
15 | 15091492584 |
16 | 102924229971 |
[3,9,52,291,1445,6420,32959,187727,1102665, 6930612,46522650,320194002,2204132973,15091492584, 102924229971] |