n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 9 |
5 | 44 |
6 | 219 |
7 | 1445 |
8 | 9985 |
9 | 82741 |
10 | 728311 |
11 | 7283418 |
12 | 77655753 |
13 | 911793737 |
14 | 11395412415 |
15 | 153867507695 |
16 | 2202984651649 |
17 | 33654697818232 |
18 | 542738828304115 |
19 | 9258768392128641 |
20 | 166006249865713377 |
21 | 3128678609433086381 |
22 | 61725044306956275015 |
23 | 1273822982167765885166 |
[1,1,1,3,9,44,219,1445,9985,82741,728311,7283418, 77655753,911793737,11395412415,153867507695, 2202984651649,33654697818232,542738828304115, 9258768392128641,166006249865713377, 3128678609433086381,61725044306956275015, 1273822982167765885166] |