n | a(n) |
---|---|
1 | 1 |
2 | 6 |
3 | 24 |
4 | 105 |
5 | 385 |
6 | 1554 |
7 | 6063 |
8 | 23688 |
9 | 92610 |
10 | 362112 |
11 | 1416360 |
12 | 5539296 |
13 | 21663378 |
14 | 84725487 |
15 | 331362185 |
16 | 1295952084 |
17 | 5068450464 |
18 | 19822658688 |
[1,6,24,105,385,1554,6063,23688,92610,362112, 1416360,5539296,21663378,84725487,331362185, 1295952084,5068450464,19822658688] |