n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 18 |
3 | 135 |
4 | 796 |
5 | 4605 |
6 | 28926 |
7 | 204883 |
8 | 1643160 |
9 | 14795001 |
10 | 147960010 |
11 | 1627574751 |
12 | 19530917748 |
13 | 253901959285 |
14 | 3554627468406 |
15 | 53319412076715 |
16 | 853110593292976 |
17 | 14502880086064113 |
18 | 261051841549259010 |
19 | 4959984989436051511 |
20 | 99199699788721190220 |
[0,1,18,135,796,4605,28926,204883,1643160, 14795001,147960010,1627574751,19530917748, 253901959285,3554627468406,53319412076715, 853110593292976,14502880086064113, 261051841549259010,4959984989436051511, 99199699788721190220] |