n | a(n) |
---|---|
1 | 4 |
2 | 12 |
3 | 80 |
4 | 448 |
5 | 11264 |
6 | 53248 |
7 | 1114112 |
8 | 4980736 |
9 | 96468992 |
10 | 7784628224 |
11 | 33285996544 |
12 | 2542620639232 |
13 | 45079976738816 |
14 | 189115999977472 |
15 | 3307330976350208 |
16 | 238690780250636288 |
17 | 17005592192950992896 |
18 | 70328211781017665536 |
19 | 4943727411754159833088 |
20 | 83822005070936202543104 |
[4,12,80,448,11264,53248,1114112,4980736,96468992, 7784628224,33285996544,2542620639232, 45079976738816,189115999977472,3307330976350208, 238690780250636288,17005592192950992896, 70328211781017665536,4943727411754159833088, 83822005070936202543104] |