n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 3 |
3 | 17 |
4 | 146 |
5 | 1704 |
6 | 25284 |
7 | 456224 |
8 | 9702776 |
9 | 237711888 |
10 | 6593032560 |
11 | 204212077992 |
12 | 6986942528400 |
13 | 261700394006232 |
14 | 10650713784774504 |
15 | 468007296229553880 |
16 | 22083086552247101184 |
17 | 1113646609708909274880 |
[0,1,3,17,146,1704,25284,456224,9702776,237711888, 6593032560,204212077992,6986942528400, 261700394006232,10650713784774504, 468007296229553880,22083086552247101184, 1113646609708909274880] |