n | a(n) |
---|---|
2 | 3 |
3 | 9 |
4 | 42 |
5 | 236 |
6 | 1280 |
7 | 6087 |
8 | 32623 |
9 | 190235 |
10 | 1136383 |
11 | 7203562 |
12 | 48328561 |
13 | 330930887 |
14 | 2266788855 |
15 | 15475721412 |
16 | 105439291827 |
[3,9,42,236,1280,6087,32623,190235,1136383, 7203562,48328561,330930887,2266788855,15475721412, 105439291827] |