n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 6 |
3 | 33 |
4 | 209 |
5 | 1425 |
6 | 10206 |
7 | 75751 |
8 | 577494 |
9 | 4495368 |
10 | 35582439 |
11 | 285524184 |
12 | 2317387098 |
13 | 18990744137 |
14 | 156918815760 |
15 | 1305927563487 |
16 | 10936673012579 |
17 | 92098612059051 |
18 | 779391530714589 |
19 | 6624730079900931 |
20 | 56532669993156696 |
21 | 484156547579505717 |
22 | 4159926573597719575 |
[1,1,6,33,209,1425,10206,75751,577494,4495368, 35582439,285524184,2317387098,18990744137, 156918815760,1305927563487,10936673012579, 92098612059051,779391530714589,6624730079900931, 56532669993156696,484156547579505717, 4159926573597719575] |