n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 1 |
4 | 9 |
5 | 68 |
6 | 527 |
7 | 4408 |
8 | 40303 |
9 | 403046 |
10 | 4393339 |
11 | 51955528 |
12 | 663383135 |
13 | 9102982354 |
14 | 133668773755 |
15 | 2092209897524 |
16 | 34783032728383 |
17 | 612234346270510 |
18 | 11375905660965179 |
19 | 222544581264066400 |
20 | 4572536725690159999 |
21 | 98456173247669999978 |
22 | 2217126753620449439515 |
[0,0,1,9,68,527,4408,40303,403046,4393339, 51955528,663383135,9102982354,133668773755, 2092209897524,34783032728383,612234346270510, 11375905660965179,222544581264066400, 4572536725690159999,98456173247669999978, 2217126753620449439515] |