n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 18 |
4 | 32 |
5 | 250 |
6 | 72 |
7 | 3430 |
8 | 6400 |
9 | 34506 |
10 | 29000 |
11 | 705430 |
12 | 1254816 |
13 | 10400598 |
14 | 8281392 |
15 | 86567400 |
16 | 300533760 |
17 | 2333606218 |
18 | 2172355848 |
19 | 35345263798 |
20 | 68442424000 |
21 | 332533406646 |
22 | 554415527952 |
23 | 8233430727598 |
24 | 12704658876288 |
25 | 105035376968750 |
[1,4,18,32,250,72,3430,6400,34506,29000,705430, 1254816,10400598,8281392,86567400,300533760, 2333606218,2172355848,35345263798,68442424000, 332533406646,554415527952,8233430727598, 12704658876288,105035376968750] |