n | a(n) |
---|---|
1 | 4 |
2 | 32 |
3 | 228 |
4 | 1672 |
5 | 12228 |
6 | 89472 |
7 | 654628 |
8 | 4789672 |
9 | 35044228 |
10 | 256405472 |
11 | 1876022628 |
12 | 13726153672 |
13 | 100429116228 |
14 | 734802161472 |
15 | 5376271710628 |
16 | 39336162877672 |
17 | 287807944468228 |
18 | 2105782741357472 |
19 | 15407222208518628 |
20 | 112728863961361672 |
[4,32,228,1672,12228,89472,654628,4789672, 35044228,256405472,1876022628,13726153672, 100429116228,734802161472,5376271710628, 39336162877672,287807944468228,2105782741357472, 15407222208518628,112728863961361672] |