n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 3 |
3 | 9 |
4 | 21 |
5 | 113 |
6 | 469 |
7 | 4085 |
8 | 28379 |
9 | 421721 |
10 | 4946881 |
11 | 123415785 |
12 | 2438547133 |
13 | 102642272877 |
14 | 3418605422546 |
15 | 242398759656743 |
16 | 13604569959521965 |
17 | 1625856487869820237 |
18 | 153782502309772183952 |
19 | 30970307573051859177121 |
20 | 4936590429632104565792997 |
21 | 1675450994355334964940357075 |
[1,2,3,9,21,113,469,4085,28379,421721,4946881, 123415785,2438547133,102642272877,3418605422546, 242398759656743,13604569959521965, 1625856487869820237,153782502309772183952, 30970307573051859177121,4936590429632104565792997, 1675450994355334964940357075] |