n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 18 |
4 | 61 |
5 | 242 |
6 | 925 |
7 | 3698 |
8 | 14621 |
9 | 58482 |
10 | 233245 |
11 | 932978 |
12 | 3729181 |
13 | 14916722 |
14 | 59655965 |
15 | 238623858 |
16 | 954451741 |
17 | 3817806962 |
18 | 15271053085 |
19 | 61084212338 |
20 | 244336150301 |
21 | 977344601202 |
22 | 3909375608605 |
[1,2,5,18,61,242,925,3698,14621,58482,233245, 932978,3729181,14916722,59655965,238623858, 954451741,3817806962,15271053085,61084212338, 244336150301,977344601202,3909375608605] |