n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 10 |
4 | 30 |
5 | 96 |
6 | 331 |
7 | 1182 |
8 | 4330 |
9 | 16440 |
10 | 63666 |
11 | 250784 |
12 | 1006836 |
13 | 4092702 |
14 | 16835669 |
15 | 70046157 |
16 | 293951828 |
17 | 1244027689 |
18 | 5304687807 |
19 | 22764368479 |
20 | 98291087090 |
21 | 426708971095 |
22 | 1861521206586 |
23 | 8158363043442 |
24 | 35903249248079 |
25 | 158607676019653 |
26 | 703176242526440 |
27 | 3127677546748113 |
28 | 13954219633996737 |
[1,2,4,10,30,96,331,1182,4330,16440,63666,250784, 1006836,4092702,16835669,70046157,293951828, 1244027689,5304687807,22764368479,98291087090, 426708971095,1861521206586,8158363043442, 35903249248079,158607676019653,703176242526440, 3127677546748113,13954219633996737] |