n | a(n) |
---|---|
1 | 1 |
2 | 144 |
3 | 12111 |
4 | 358120 |
5 | 5131650 |
6 | 45528756 |
7 | 288936634 |
8 | 1433251296 |
9 | 5887880415 |
10 | 20842168600 |
11 | 65402344161 |
12 | 185788177224 |
13 | 485443851256 |
14 | 1181242399260 |
15 | 2703252560100 |
16 | 5864398969216 |
17 | 12138503871789 |
18 | 24101498435616 |
19 | 46112016365155 |
20 | 85335258695400 |
21 | 153249227870046 |
[1,144,12111,358120,5131650,45528756,288936634, 1433251296,5887880415,20842168600,65402344161, 185788177224,485443851256,1181242399260, 2703252560100,5864398969216,12138503871789, 24101498435616,46112016365155,85335258695400, 153249227870046] |