n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 14 |
5 | 44 |
6 | 153 |
7 | 583 |
8 | 2410 |
9 | 10721 |
10 | 50965 |
11 | 257393 |
12 | 1374187 |
13 | 7722862 |
14 | 45520064 |
15 | 280502924 |
16 | 1802060232 |
17 | 12040040899 |
18 | 83475921469 |
19 | 599400745354 |
20 | 4449689901306 |
21 | 34096169966924 |
22 | 269286884243138 |
23 | 2189193150557825 |
24 | 18297258191472880 |
25 | 157049750065028868 |
[1,1,2,5,14,44,153,583,2410,10721,50965,257393, 1374187,7722862,45520064,280502924,1802060232, 12040040899,83475921469,599400745354, 4449689901306,34096169966924,269286884243138, 2189193150557825,18297258191472880, 157049750065028868] |