n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 21 |
4 | 282 |
5 | 6210 |
6 | 202410 |
7 | 9135630 |
8 | 545007960 |
9 | 41514583320 |
10 | 3930730108200 |
11 | 452785322266200 |
12 | 62347376347779600 |
13 | 10112899541133589200 |
14 | 1908371363842760216400 |
15 | 414517594539154672566000 |
16 | 102681435747106627787376000 |
17 | 28772944645196614863048048000 |
[1,1,3,21,282,6210,202410,9135630,545007960, 41514583320,3930730108200,452785322266200, 62347376347779600,10112899541133589200, 1908371363842760216400,414517594539154672566000, 102681435747106627787376000, 28772944645196614863048048000] |