n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 8 |
6 | 67 |
7 | 602 |
8 | 5811 |
9 | 60875 |
10 | 690729 |
11 | 8457285 |
12 | 111323149 |
13 | 1569068565 |
14 | 23592426102 |
15 | 377105857043 |
16 | 6387313185576 |
17 | 114303481217657 |
18 | 2155348564847332 |
19 | 42719058006864690 |
20 | 887953677898186108 |
21 | 19316200230609433690 |
22 | 438920223893512987430 |
[0,0,0,1,8,67,602,5811,60875,690729,8457285, 111323149,1569068565,23592426102,377105857043, 6387313185576,114303481217657,2155348564847332, 42719058006864690,887953677898186108, 19316200230609433690,438920223893512987430] |