n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 10 |
4 | 36 |
5 | 201 |
6 | 1625 |
7 | 17361 |
8 | 222241 |
9 | 3160641 |
10 | 47594625 |
11 | 738433281 |
12 | 11633144321 |
13 | 184687354881 |
14 | 2943499290625 |
15 | 47004182220801 |
16 | 751333186150401 |
17 | 12015464030289921 |
18 | 192200500444954625 |
19 | 3074832660977745921 |
20 | 49194319991205396481 |
21 | 787085099922532597761 |
[1,2,4,10,36,201,1625,17361,222241,3160641, 47594625,738433281,11633144321,184687354881, 2943499290625,47004182220801,751333186150401, 12015464030289921,192200500444954625, 3074832660977745921,49194319991205396481, 787085099922532597761] |