n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 8 |
3 | 50 |
4 | 288 |
5 | 1605 |
6 | 8824 |
7 | 48286 |
8 | 264128 |
9 | 1447338 |
10 | 7953040 |
11 | 43842788 |
12 | 242507456 |
13 | 1345868589 |
14 | 7493458392 |
15 | 41850173670 |
16 | 234408444288 |
17 | 1316541032958 |
18 | 7413214297968 |
19 | 41842633282620 |
20 | 236703844320960 |
[0,1,8,50,288,1605,8824,48286,264128,1447338, 7953040,43842788,242507456,1345868589,7493458392, 41850173670,234408444288,1316541032958, 7413214297968,41842633282620,236703844320960] |