n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 16 |
4 | 105 |
5 | 768 |
6 | 6006 |
7 | 49152 |
8 | 415701 |
9 | 3604480 |
10 | 31870410 |
11 | 286261248 |
12 | 2604681690 |
13 | 23957864448 |
14 | 222399744300 |
15 | 2080911654912 |
16 | 19604537460045 |
17 | 185813170126848 |
18 | 1770558814528770 |
19 | 16951376923852800 |
20 | 162984598242674670 |
[1,3,16,105,768,6006,49152,415701,3604480, 31870410,286261248,2604681690,23957864448, 222399744300,2080911654912,19604537460045, 185813170126848,1770558814528770, 16951376923852800,162984598242674670] |