n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 1 |
4 | 1 |
5 | 2 |
6 | 3 |
7 | 10 |
8 | 27 |
9 | 101 |
10 | 364 |
11 | 1610 |
12 | 7202 |
13 | 34659 |
14 | 170692 |
15 | 864590 |
16 | 4463287 |
17 | 23415443 |
18 | 124526110 |
19 | 670224294 |
20 | 3644907768 |
21 | 20011145443 |
22 | 110794212315 |
23 | 618187581204 |
[0,0,1,1,2,3,10,27,101,364,1610,7202,34659,170692, 864590,4463287,23415443,124526110,670224294, 3644907768,20011145443,110794212315,618187581204] |