n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 3 |
4 | 7 |
5 | 16 |
6 | 51 |
7 | 179 |
8 | 842 |
9 | 4601 |
10 | 33229 |
11 | 286284 |
12 | 3243665 |
13 | 44468561 |
14 | 800242506 |
15 | 17564890003 |
16 | 505712818663 |
17 | 17842259251624 |
18 | 825465630656435 |
19 | 46929863536852851 |
20 | 3498201665311407586 |
21 | 320978728492120944601 |
[1,1,2,3,7,16,51,179,842,4601,33229,286284, 3243665,44468561,800242506,17564890003, 505712818663,17842259251624,825465630656435, 46929863536852851,3498201665311407586, 320978728492120944601] |