n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 3 |
4 | 134 |
5 | 1935 |
6 | 20830 |
7 | 198303 |
8 | 1776894 |
9 | 15402495 |
10 | 130890110 |
11 | 1098087903 |
12 | 9130126654 |
13 | 75412301055 |
14 | 619706950590 |
15 | 5071742430303 |
16 | 41369422556414 |
17 | 336511166127615 |
18 | 2730929153686270 |
19 | 22119108433729503 |
20 | 178853777028618174 |
[0,0,3,134,1935,20830,198303,1776894,15402495, 130890110,1098087903,9130126654,75412301055, 619706950590,5071742430303,41369422556414, 336511166127615,2730929153686270, 22119108433729503,178853777028618174] |