n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 9 |
5 | 30 |
6 | 107 |
7 | 392 |
8 | 1489 |
9 | 5783 |
10 | 22874 |
11 | 91822 |
12 | 373111 |
13 | 1531744 |
14 | 6343528 |
15 | 26469872 |
16 | 111180537 |
17 | 469696489 |
18 | 1994490659 |
19 | 8508116485 |
20 | 36443396006 |
21 | 156680537096 |
22 | 675885192670 |
23 | 2924577632532 |
24 | 12690327612739 |
25 | 55208106904873 |
[1,1,1,3,9,30,107,392,1489,5783,22874,91822, 373111,1531744,6343528,26469872,111180537, 469696489,1994490659,8508116485,36443396006, 156680537096,675885192670,2924577632532, 12690327612739,55208106904873] |