n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 10 |
5 | 36 |
6 | 153 |
7 | 780 |
8 | 4005 |
9 | 22366 |
10 | 128778 |
11 | 766941 |
12 | 4674153 |
13 | 29180980 |
14 | 185117661 |
15 | 1193918545 |
16 | 7800816871 |
17 | 51584238201 |
18 | 344632209090 |
19 | 2324190638055 |
20 | 15804057614995 |
21 | 108277583483391 |
22 | 746878494484128 |
23 | 5183852459907628 |
[1,1,3,10,36,153,780,4005,22366,128778,766941, 4674153,29180980,185117661,1193918545,7800816871, 51584238201,344632209090,2324190638055, 15804057614995,108277583483391,746878494484128, 5183852459907628] |