n | a(n) |
---|---|
0 | 1 |
1 | 9 |
2 | 49 |
3 | 209 |
4 | 769 |
5 | 2561 |
6 | 7937 |
7 | 23297 |
8 | 65537 |
9 | 178177 |
10 | 471041 |
11 | 1216513 |
12 | 3080193 |
13 | 7667713 |
14 | 18808833 |
15 | 45547521 |
16 | 109051905 |
17 | 258473985 |
18 | 607125505 |
19 | 1414529025 |
20 | 3271557121 |
21 | 7516192769 |
22 | 17163091969 |
[1,9,49,209,769,2561,7937,23297,65537,178177, 471041,1216513,3080193,7667713,18808833,45547521, 109051905,258473985,607125505,1414529025, 3271557121,7516192769,17163091969] |