n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 13 |
4 | 61 |
5 | 441 |
6 | 3031 |
7 | 28813 |
8 | 267513 |
9 | 3088081 |
10 | 36278731 |
11 | 491262861 |
12 | 6962025973 |
13 | 108395586313 |
14 | 1791145742751 |
15 | 31601369155021 |
16 | 594291393830641 |
17 | 11740929829286433 |
18 | 246910933786777363 |
19 | 5406641472165854221 |
20 | 125497950720670828461 |
21 | 3018786042678264770521 |
[1,1,3,13,61,441,3031,28813,267513,3088081, 36278731,491262861,6962025973,108395586313, 1791145742751,31601369155021,594291393830641, 11740929829286433,246910933786777363, 5406641472165854221,125497950720670828461, 3018786042678264770521] |