n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 14 |
4 | 42 |
5 | 140 |
6 | 480 |
7 | 1710 |
8 | 6227 |
9 | 23087 |
10 | 87495 |
11 | 335253 |
12 | 1304117 |
13 | 5120189 |
14 | 20286069 |
15 | 81087950 |
16 | 326175588 |
17 | 1321918434 |
18 | 5385669252 |
19 | 22062590893 |
20 | 90821095614 |
21 | 375419697147 |
22 | 1558667802107 |
23 | 6493810637583 |
24 | 27152832780694 |
25 | 113894033778109 |
26 | 479137002109941 |
27 | 2021504946377131 |
28 | 8550206541089202 |
[1,2,5,14,42,140,480,1710,6227,23087,87495,335253, 1304117,5120189,20286069,81087950,326175588, 1321918434,5385669252,22062590893,90821095614, 375419697147,1558667802107,6493810637583, 27152832780694,113894033778109,479137002109941, 2021504946377131,8550206541089202] |