n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 3 |
3 | 20 |
4 | 172 |
5 | 1864 |
6 | 24248 |
7 | 368136 |
8 | 6388128 |
9 | 124711944 |
10 | 2705241672 |
11 | 64550432352 |
12 | 1680280323984 |
13 | 47383464508080 |
14 | 1438986494794704 |
15 | 46821994627363968 |
16 | 1625069178022566528 |
17 | 59927028756823323648 |
18 | 2339899614887520358656 |
19 | 96439023491479275172608 |
[0,1,3,20,172,1864,24248,368136,6388128,124711944, 2705241672,64550432352,1680280323984, 47383464508080,1438986494794704,46821994627363968, 1625069178022566528,59927028756823323648, 2339899614887520358656,96439023491479275172608] |