n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 5 |
3 | 28 |
4 | 321 |
5 | 3636 |
6 | 65947 |
7 | 1154238 |
8 | 28622001 |
9 | 684987400 |
10 | 21513702771 |
11 | 656705784714 |
12 | 24936869827465 |
13 | 928288327257084 |
14 | 41315505985090443 |
15 | 1817727059210127286 |
16 | 92749773791662574433 |
17 | 4712674616532693996432 |
18 | 271157923143678988333027 |
[1,1,5,28,321,3636,65947,1154238,28622001, 684987400,21513702771,656705784714,24936869827465, 928288327257084,41315505985090443, 1817727059210127286,92749773791662574433, 4712674616532693996432,271157923143678988333027] |