n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 12 |
3 | 48 |
4 | 172 |
5 | 688 |
6 | 2576 |
7 | 10304 |
8 | 39340 |
9 | 157360 |
10 | 607376 |
11 | 2429504 |
12 | 9442448 |
13 | 37769792 |
14 | 147495104 |
15 | 589980416 |
16 | 2311926188 |
17 | 9247704752 |
18 | 36333781776 |
19 | 145335127104 |
20 | 572189853200 |
21 | 2288759412800 |
22 | 9025822792896 |
23 | 36103291171584 |
24 | 142567754881168 |
25 | 570271019524672 |
26 | 2254477964009664 |
27 | 9017911856038656 |
[1,4,12,48,172,688,2576,10304,39340,157360,607376, 2429504,9442448,37769792,147495104,589980416, 2311926188,9247704752,36333781776,145335127104, 572189853200,2288759412800,9025822792896, 36103291171584,142567754881168,570271019524672, 2254477964009664,9017911856038656] |