n | a(n) |
---|---|
1 | 2 |
2 | 20 |
3 | 110 |
4 | 2600 |
5 | 16150 |
6 | 208012 |
7 | 1376550 |
8 | 74437200 |
9 | 511755750 |
10 | 7134913500 |
11 | 50315410002 |
12 | 1433226830360 |
13 | 10292051290430 |
14 | 148889972762300 |
15 | 1083802983548950 |
16 | 126935005433253024 |
17 | 933787075442258310 |
18 | 13799767368300523260 |
[2,20,110,2600,16150,208012,1376550,74437200, 511755750,7134913500,50315410002,1433226830360, 10292051290430,148889972762300,1083802983548950, 126935005433253024,933787075442258310, 13799767368300523260] |