n | a(n) |
---|---|
1 | 1 |
2 | 17 |
3 | 189 |
4 | 899 |
5 | 7485 |
6 | 50831 |
7 | 355929 |
8 | 2503359 |
9 | 17611057 |
10 | 123747825 |
11 | 869308845 |
12 | 6110148907 |
13 | 42934775357 |
14 | 301710593001 |
15 | 2120231045803 |
16 | 14899304646125 |
17 | 104701046013783 |
18 | 735760461321649 |
19 | 5170369292373967 |
20 | 36333455835692225 |
[1,17,189,899,7485,50831,355929,2503359,17611057, 123747825,869308845,6110148907,42934775357, 301710593001,2120231045803,14899304646125, 104701046013783,735760461321649,5170369292373967, 36333455835692225] |