n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 15 |
4 | 27 |
5 | 354 |
6 | 893 |
7 | 2127 |
8 | 2133 |
9 | 2427 |
10 | 2649 |
11 | 4098 |
12 | 4107 |
13 | 6189 |
14 | 19721 |
15 | 124064 |
16 | 140287 |
17 | 1200685 |
18 | 17347808 |
19 | 18209035 |
20 | 32738176 |
21 | 35033632 |
[1,2,15,27,354,893,2127,2133,2427,2649,4098,4107, 6189,19721,124064,140287,1200685,17347808, 18209035,32738176,35033632] |