n | a(n) |
---|---|
1 | 0 |
2 | 4 |
3 | 17 |
4 | 330 |
5 | 3666 |
6 | 46289 |
7 | 560809 |
8 | 6883464 |
9 | 84161576 |
10 | 1030163755 |
11 | 12605295745 |
12 | 154256946272 |
13 | 1887655962034 |
14 | 23099627259711 |
15 | 282674025688925 |
16 | 3459132503499606 |
17 | 42330011144976582 |
18 | 517999809756567289 |
[0,4,17,330,3666,46289,560809,6883464,84161576, 1030163755,12605295745,154256946272,1887655962034, 23099627259711,282674025688925,3459132503499606, 42330011144976582,517999809756567289] |