n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 21 |
4 | 241 |
5 | 3951 |
6 | 85499 |
7 | 2325205 |
8 | 76860673 |
9 | 3014656183 |
10 | 137784836475 |
11 | 7235668490589 |
12 | 431692029451009 |
13 | 28991550501283359 |
14 | 2174713803535479419 |
15 | 181001542259074421413 |
16 | 16618721538838243841185 |
17 | 1674634828088234390862727 |
18 | 184352162064651888588105243 |
[1,1,3,21,241,3951,85499,2325205,76860673, 3014656183,137784836475,7235668490589, 431692029451009,28991550501283359, 2174713803535479419,181001542259074421413, 16618721538838243841185,1674634828088234390862727, 184352162064651888588105243] |