n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 13 |
5 | 37 |
6 | 111 |
7 | 345 |
8 | 1105 |
9 | 3624 |
10 | 12099 |
11 | 41000 |
12 | 140647 |
13 | 487440 |
14 | 1704115 |
15 | 6002600 |
16 | 21282235 |
17 | 75890812 |
18 | 272000538 |
19 | 979310627 |
20 | 3540297130 |
21 | 12845634348 |
22 | 46764904745 |
23 | 170767429511 |
24 | 625314778963 |
25 | 2295635155206 |
26 | 8447553316546 |
27 | 31153444946778 |
28 | 115122389065883 |
[1,1,2,5,13,37,111,345,1105,3624,12099,41000, 140647,487440,1704115,6002600,21282235,75890812, 272000538,979310627,3540297130,12845634348, 46764904745,170767429511,625314778963, 2295635155206,8447553316546,31153444946778, 115122389065883] |