n | a(n) |
---|---|
1 | 4 |
2 | 32 |
3 | 156 |
4 | 640 |
5 | 2380 |
6 | 8304 |
7 | 27580 |
8 | 89216 |
9 | 280980 |
10 | 869360 |
11 | 2649284 |
12 | 7967808 |
13 | 23722244 |
14 | 69977040 |
15 | 204845220 |
16 | 595628032 |
17 | 1721605028 |
18 | 4950241488 |
19 | 14167239268 |
20 | 40376066560 |
21 | 114635882508 |
22 | 324361357936 |
23 | 914912704060 |
24 | 2573307218304 |
25 | 7218778025700 |
26 | 20201661701936 |
27 | 56408010198948 |
[4,32,156,640,2380,8304,27580,89216,280980,869360, 2649284,7967808,23722244,69977040,204845220, 595628032,1721605028,4950241488,14167239268, 40376066560,114635882508,324361357936, 914912704060,2573307218304,7218778025700, 20201661701936,56408010198948] |