n | a(n) |
---|---|
1 | 6 |
2 | 15 |
3 | 114 |
4 | 771 |
5 | 4837 |
6 | 27921 |
7 | 147717 |
8 | 725287 |
9 | 3342140 |
10 | 14569918 |
11 | 60328126 |
12 | 237879223 |
13 | 895542427 |
14 | 3227615841 |
15 | 11166814658 |
16 | 37186260684 |
17 | 119490688029 |
18 | 371363754669 |
19 | 1118694131688 |
20 | 3272799722189 |
21 | 9315261723895 |
22 | 25836710356888 |
[6,15,114,771,4837,27921,147717,725287,3342140, 14569918,60328126,237879223,895542427,3227615841, 11166814658,37186260684,119490688029,371363754669, 1118694131688,3272799722189,9315261723895, 25836710356888] |