n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 20 |
4 | 90 |
5 | 544 |
6 | 5096 |
7 | 79264 |
8 | 2208612 |
9 | 113743760 |
10 | 10926227136 |
11 | 1956363435360 |
12 | 652335084592096 |
13 | 405402273420996800 |
14 | 470568642161119963904 |
15 | 1023063423471189431054720 |
16 | 4178849203082023236058229792 |
17 | 32168008290073542372004082199424 |
[1,2,6,20,90,544,5096,79264,2208612,113743760, 10926227136,1956363435360,652335084592096, 405402273420996800,470568642161119963904, 1023063423471189431054720, 4178849203082023236058229792, 32168008290073542372004082199424] |