n | a(n) |
---|---|
0 | 1 |
1 | 18 |
2 | 213 |
3 | 2098 |
4 | 18669 |
5 | 155946 |
6 | 1248661 |
7 | 9704706 |
8 | 73804797 |
9 | 552214234 |
10 | 4080381669 |
11 | 29857556274 |
12 | 216794571085 |
13 | 1564401539082 |
14 | 11232205936437 |
15 | 80315244188002 |
16 | 572351251736733 |
17 | 4067348923173690 |
18 | 28836875054284165 |
[1,18,213,2098,18669,155946,1248661,9704706, 73804797,552214234,4080381669,29857556274, 216794571085,1564401539082,11232205936437, 80315244188002,572351251736733,4067348923173690, 28836875054284165] |