n | a(n) |
---|---|
0 | 1 |
1 | 8 |
2 | 61 |
3 | 462 |
4 | 3504 |
5 | 26664 |
6 | 203632 |
7 | 1560416 |
8 | 11994112 |
9 | 92445184 |
10 | 714258944 |
11 | 5530504192 |
12 | 42905149440 |
13 | 333427783680 |
14 | 2595170856960 |
15 | 20227227279360 |
16 | 157854186209280 |
17 | 1233319675822080 |
18 | 9646098160680960 |
19 | 75517231288811520 |
[1,8,61,462,3504,26664,203632,1560416,11994112, 92445184,714258944,5530504192,42905149440, 333427783680,2595170856960,20227227279360, 157854186209280,1233319675822080,9646098160680960, 75517231288811520] |