n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 13 |
4 | 75 |
5 | 541 |
6 | 4683 |
7 | 47293 |
8 | 545835 |
9 | 7087261 |
10 | 102247563 |
11 | 1622632572 |
12 | 28091567570 |
13 | 526858347730 |
14 | 10641342953670 |
15 | 230283190536542 |
16 | 5315654669985946 |
17 | 130370766690581274 |
18 | 3385534653313192094 |
19 | 92801587015186096762 |
20 | 2677687786557636155446 |
[1,1,3,13,75,541,4683,47293,545835,7087261, 102247563,1622632572,28091567570,526858347730, 10641342953670,230283190536542,5315654669985946, 130370766690581274,3385534653313192094, 92801587015186096762,2677687786557636155446] |