n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 9 |
4 | 37 |
5 | 152 |
6 | 780 |
7 | 3965 |
8 | 23460 |
9 | 141471 |
10 | 944217 |
11 | 6445643 |
12 | 48075092 |
13 | 364921557 |
14 | 2974423953 |
15 | 24847873439 |
16 | 219611194148 |
17 | 1987556951714 |
18 | 18930298888792 |
19 | 184244039718755 |
20 | 1874490999743203 |
21 | 19510832177784098 |
22 | 210941659716920257 |
23 | 2331530519337226199 |
24 | 26692555830628617358 |
[1,1,3,9,37,152,780,3965,23460,141471,944217, 6445643,48075092,364921557,2974423953,24847873439, 219611194148,1987556951714,18930298888792, 184244039718755,1874490999743203, 19510832177784098,210941659716920257, 2331530519337226199,26692555830628617358] |