n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 9 |
4 | 69 |
5 | 780 |
6 | 12015 |
7 | 240254 |
8 | 6022121 |
9 | 184115728 |
10 | 6718994385 |
11 | 287695076790 |
12 | 14253791802085 |
13 | 807709767584928 |
14 | 51832973461142601 |
15 | 3734821283563097350 |
16 | 299928689437970776785 |
17 | 26669987585007924913536 |
18 | 2610872906937221730434977 |
19 | 279949862628226582759321542 |
20 | 32727135115533487802060517885 |
[1,1,2,9,69,780,12015,240254,6022121,184115728, 6718994385,287695076790,14253791802085, 807709767584928,51832973461142601, 3734821283563097350,299928689437970776785, 26669987585007924913536,2610872906937221730434977, 279949862628226582759321542, 32727135115533487802060517885] |