n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 11 |
4 | 51 |
5 | 259 |
6 | 1282 |
7 | 6665 |
8 | 34938 |
9 | 186612 |
10 | 1007510 |
11 | 5496925 |
12 | 30231741 |
13 | 167444795 |
14 | 932900050 |
15 | 5224277345 |
16 | 29386526544 |
17 | 165947641615 |
18 | 940369781244 |
19 | 5345260877285 |
20 | 30467985992745 |
21 | 174102782853475 |
22 | 997134114520250 |
[1,2,11,51,259,1282,6665,34938,186612,1007510, 5496925,30231741,167444795,932900050,5224277345, 29386526544,165947641615,940369781244, 5345260877285,30467985992745,174102782853475, 997134114520250] |