n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 13 |
4 | 69 |
5 | 457 |
6 | 3579 |
7 | 32521 |
8 | 335853 |
9 | 3888823 |
10 | 49902045 |
11 | 703123621 |
12 | 10793341131 |
13 | 179315984983 |
14 | 3205886624445 |
15 | 61375996359973 |
16 | 1252826360392317 |
17 | 27162281897430607 |
18 | 623375610559904343 |
19 | 15098095476369328345 |
20 | 384854289897145441635 |
21 | 10299091666341922887571 |
[1,1,3,13,69,457,3579,32521,335853,3888823, 49902045,703123621,10793341131,179315984983, 3205886624445,61375996359973,1252826360392317, 27162281897430607,623375610559904343, 15098095476369328345,384854289897145441635, 10299091666341922887571] |