n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 9 |
5 | 29 |
6 | 105 |
7 | 390 |
8 | 1528 |
9 | 6119 |
10 | 25140 |
11 | 104936 |
12 | 444637 |
13 | 1905331 |
14 | 8246619 |
15 | 35988793 |
16 | 158199975 |
17 | 699788234 |
18 | 3112679085 |
19 | 13913394416 |
20 | 62465305846 |
21 | 281551756181 |
22 | 1273583739390 |
23 | 5779693081500 |
24 | 26306751243309 |
[0,1,1,3,9,29,105,390,1528,6119,25140,104936, 444637,1905331,8246619,35988793,158199975, 699788234,3112679085,13913394416,62465305846, 281551756181,1273583739390,5779693081500, 26306751243309] |