n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 16 |
4 | 140 |
5 | 1622 |
6 | 23688 |
7 | 414291 |
8 | 8408768 |
9 | 193891684 |
10 | 5001814400 |
11 | 142675793705 |
12 | 4458289724928 |
13 | 151440666806526 |
14 | 5556047001924608 |
15 | 218947599027613687 |
16 | 9223382498249719808 |
17 | 413620308786882430088 |
[1,1,3,16,140,1622,23688,414291,8408768,193891684, 5001814400,142675793705,4458289724928, 151440666806526,5556047001924608, 218947599027613687,9223382498249719808, 413620308786882430088] |