n | a(n) |
---|---|
1 | 2 |
2 | 5 |
3 | 9 |
4 | 21 |
5 | 53 |
6 | 105 |
7 | 237 |
8 | 577 |
9 | 1205 |
10 | 2681 |
11 | 6349 |
12 | 13681 |
13 | 30309 |
14 | 70377 |
15 | 154429 |
16 | 342177 |
17 | 783957 |
18 | 1737881 |
19 | 3857581 |
20 | 8760529 |
21 | 19527749 |
22 | 43436873 |
23 | 98090781 |
24 | 219270657 |
25 | 488654645 |
26 | 1099633401 |
27 | 2461435533 |
28 | 5493590065 |
29 | 12336038693 |
30 | 27628989353 |
[2,5,9,21,53,105,237,577,1205,2681,6349,13681, 30309,70377,154429,342177,783957,1737881,3857581, 8760529,19527749,43436873,98090781,219270657, 488654645,1099633401,2461435533,5493590065, 12336038693,27628989353] |