n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 40 |
3 | 260 |
4 | 1820 |
5 | 12376 |
6 | 85085 |
7 | 582505 |
8 | 3994320 |
9 | 27372840 |
10 | 187628376 |
11 | 1285992240 |
12 | 8814405145 |
13 | 60414613805 |
14 | 414088493560 |
15 | 2838203264876 |
16 | 19453338487220 |
17 | 133335155341960 |
18 | 913892777190965 |
19 | 6263914210945105 |
[1,5,40,260,1820,12376,85085,582505,3994320, 27372840,187628376,1285992240,8814405145, 60414613805,414088493560,2838203264876, 19453338487220,133335155341960,913892777190965, 6263914210945105] |