n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 72 |
3 | 1336 |
4 | 27816 |
5 | 609504 |
6 | 13849776 |
7 | 322761632 |
8 | 7665078696 |
9 | 184706717728 |
10 | 4502875483072 |
11 | 110816709352848 |
12 | 2748733193029488 |
13 | 68633934354206784 |
14 | 1723482744564382272 |
15 | 43491464193991134336 |
16 | 1102200555724995901864 |
17 | 28038534962615758665120 |
18 | 715655490507796997136960 |
19 | 18321118155905647835092032 |
[1,4,72,1336,27816,609504,13849776,322761632, 7665078696,184706717728,4502875483072, 110816709352848,2748733193029488, 68633934354206784,1723482744564382272, 43491464193991134336,1102200555724995901864, 28038534962615758665120,715655490507796997136960, 18321118155905647835092032] |