n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 5 |
3 | 30 |
4 | 224 |
5 | 1871 |
6 | 16771 |
7 | 157668 |
8 | 1533970 |
9 | 15314626 |
10 | 156008660 |
11 | 1615147014 |
12 | 16944659846 |
13 | 179746651907 |
14 | 1924700759635 |
15 | 20776060271760 |
16 | 225838715259574 |
17 | 2469974866825150 |
18 | 27160344857205806 |
19 | 300101157823582668 |
[1,1,5,30,224,1871,16771,157668,1533970,15314626, 156008660,1615147014,16944659846,179746651907, 1924700759635,20776060271760,225838715259574, 2469974866825150,27160344857205806, 300101157823582668] |