n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 20 |
3 | 147 |
4 | 1143 |
5 | 9163 |
6 | 74919 |
7 | 621015 |
8 | 5199909 |
9 | 43878315 |
10 | 372530781 |
11 | 3178551148 |
12 | 27231924300 |
13 | 234113134518 |
14 | 2018601251793 |
15 | 17449264269081 |
16 | 151169392399773 |
[1,3,20,147,1143,9163,74919,621015,5199909, 43878315,372530781,3178551148,27231924300, 234113134518,2018601251793,17449264269081, 151169392399773] |