n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 3 |
3 | 18 |
4 | 189 |
5 | 2484 |
6 | 40095 |
7 | 766422 |
8 | 16936857 |
9 | 424878696 |
10 | 11929019931 |
11 | 370616958810 |
12 | 12624017298453 |
13 | 467806833261468 |
14 | 18736803171836919 |
15 | 806593620214132254 |
16 | 37139869052368612785 |
17 | 1821430208283971761872 |
18 | 94787073944153359107507 |
19 | 5216859224231615866946466 |
[1,0,3,18,189,2484,40095,766422,16936857, 424878696,11929019931,370616958810,12624017298453, 467806833261468,18736803171836919, 806593620214132254,37139869052368612785, 1821430208283971761872,94787073944153359107507, 5216859224231615866946466] |