n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 12 |
3 | 76 |
4 | 600 |
5 | 5304 |
6 | 50232 |
7 | 498360 |
8 | 5112756 |
9 | 53796820 |
10 | 577370508 |
11 | 6295961100 |
12 | 69557631936 |
13 | 776913430272 |
14 | 8758443555360 |
15 | 99527014659360 |
16 | 1138832618425272 |
17 | 13110313153525272 |
18 | 151738042878341400 |
19 | 1764609260161776600 |
[1,3,12,76,600,5304,50232,498360,5112756,53796820, 577370508,6295961100,69557631936,776913430272, 8758443555360,99527014659360,1138832618425272, 13110313153525272,151738042878341400, 1764609260161776600] |