n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 13 |
4 | 73 |
5 | 501 |
6 | 4051 |
7 | 37633 |
8 | 394353 |
9 | 4596553 |
10 | 55312291 |
11 | 744239541 |
12 | 10793656633 |
13 | 167689950013 |
14 | 2775839905203 |
15 | 48726598412521 |
16 | 903159189729121 |
17 | 17607070923233553 |
18 | 359702718305842243 |
19 | 7673827033741108573 |
20 | 171586828999546057641 |
21 | 3999150173195168500741 |
[1,1,3,13,73,501,4051,37633,394353,4596553, 55312291,744239541,10793656633,167689950013, 2775839905203,48726598412521,903159189729121, 17607070923233553,359702718305842243, 7673827033741108573,171586828999546057641, 3999150173195168500741] |