n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 9 |
4 | 35 |
5 | 129 |
6 | 520 |
7 | 2099 |
8 | 8807 |
9 | 37088 |
10 | 159794 |
11 | 690849 |
12 | 3030304 |
13 | 13335930 |
14 | 59258020 |
15 | 264113060 |
16 | 1185147895 |
17 | 5332540349 |
18 | 24112886920 |
19 | 109297185243 |
20 | 497282246389 |
21 | 2267352943686 |
22 | 10368466205267 |
23 | 47503254404371 |
24 | 218152741334750 |
25 | 1003498005664967 |
26 | 4625071542555164 |
27 | 21347976628985857 |
[1,1,3,9,35,129,520,2099,8807,37088,159794,690849, 3030304,13335930,59258020,264113060,1185147895, 5332540349,24112886920,109297185243,497282246389, 2267352943686,10368466205267,47503254404371, 218152741334750,1003498005664967,4625071542555164, 21347976628985857] |