n | a(n) |
---|---|
1 | 2 |
2 | 3 |
3 | 4 |
4 | 12 |
5 | 20 |
6 | 55 |
7 | 127 |
8 | 371 |
9 | 1037 |
10 | 3249 |
11 | 10071 |
12 | 32913 |
13 | 108112 |
14 | 363618 |
15 | 1233938 |
16 | 4244102 |
17 | 14716095 |
18 | 51480027 |
19 | 181312939 |
[2,3,4,12,20,55,127,371,1037,3249,10071,32913, 108112,363618,1233938,4244102,14716095,51480027, 181312939] |