n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 6 |
4 | 20 |
5 | 58 |
6 | 193 |
7 | 632 |
8 | 2283 |
9 | 8009 |
10 | 29503 |
11 | 109608 |
12 | 417840 |
13 | 1593676 |
14 | 6201714 |
15 | 24352821 |
16 | 96549718 |
17 | 384965234 |
18 | 1551154581 |
19 | 6289703937 |
20 | 25643105136 |
21 | 105131398752 |
22 | 433780213485 |
23 | 1797589931543 |
24 | 7479489370556 |
25 | 31262568274435 |
26 | 131224989229643 |
27 | 552593121507505 |
28 | 2334726454418711 |
[1,1,3,6,20,58,193,632,2283,8009,29503,109608, 417840,1593676,6201714,24352821,96549718, 384965234,1551154581,6289703937,25643105136, 105131398752,433780213485,1797589931543, 7479489370556,31262568274435,131224989229643, 552593121507505,2334726454418711] |