n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 20 |
4 | 148 |
5 | 1384 |
6 | 15728 |
7 | 207696 |
8 | 3094152 |
9 | 51423288 |
10 | 945943512 |
11 | 19083180192 |
12 | 418550811600 |
13 | 9907493349168 |
14 | 251588827187280 |
15 | 6820899616891008 |
16 | 196645361557479552 |
17 | 6007407711127690752 |
18 | 193842462200078260224 |
19 | 6586904673329133618432 |
20 | 235079477736802622742528 |
21 | 8790132360155070084076800 |
[1,1,3,20,148,1384,15728,207696,3094152,51423288, 945943512,19083180192,418550811600,9907493349168, 251588827187280,6820899616891008, 196645361557479552,6007407711127690752, 193842462200078260224,6586904673329133618432, 235079477736802622742528, 8790132360155070084076800] |