n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 20 |
3 | 78 |
4 | 307 |
5 | 1219 |
6 | 4862 |
7 | 19428 |
8 | 77685 |
9 | 310705 |
10 | 1242776 |
11 | 4971050 |
12 | 19884135 |
13 | 79536463 |
14 | 318145762 |
15 | 1272582944 |
16 | 5090331657 |
17 | 20361326493 |
18 | 81445305820 |
19 | 325781223110 |
20 | 1303124892251 |
21 | 5212499568795 |
22 | 20849998274950 |
23 | 83399993099548 |
24 | 333599972397917 |
[1,5,20,78,307,1219,4862,19428,77685,310705, 1242776,4971050,19884135,79536463,318145762, 1272582944,5090331657,20361326493,81445305820, 325781223110,1303124892251,5212499568795, 20849998274950,83399993099548,333599972397917] |