n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 14 |
5 | 44 |
6 | 152 |
7 | 572 |
8 | 2324 |
9 | 10124 |
10 | 47012 |
11 | 231572 |
12 | 1204964 |
13 | 6599444 |
14 | 37924292 |
15 | 228033332 |
16 | 1431128804 |
17 | 9354072404 |
18 | 63548071172 |
19 | 447923400692 |
20 | 3270361265444 |
21 | 24696229801364 |
22 | 192625876675652 |
23 | 1549890430643252 |
24 | 12849460733123684 |
25 | 109647468132256724 |
[1,1,2,5,14,44,152,572,2324,10124,47012,231572, 1204964,6599444,37924292,228033332,1431128804, 9354072404,63548071172,447923400692,3270361265444, 24696229801364,192625876675652,1549890430643252, 12849460733123684,109647468132256724] |