n | a(n) |
---|---|
1 | 3 |
2 | 7 |
3 | 13 |
4 | 31 |
5 | 43 |
6 | 73 |
7 | 421 |
8 | 2551 |
9 | 6481 |
10 | 8191 |
11 | 250501 |
12 | 4002001 |
13 | 64008001 |
14 | 81009001 |
15 | 40000200001 |
16 | 90000300001 |
17 | 64000008000001 |
18 | 400000000020000000001 |
19 | 3600000000060000000001 |
20 | 64000000000008000000000001 |
21 | 90000000000000300000000000001 |
22 | 250000000000000500000000000001 |
[3,7,13,31,43,73,421,2551,6481,8191,250501, 4002001,64008001,81009001,40000200001,90000300001, 64000008000001,400000000020000000001, 3600000000060000000001,64000000000008000000000001, 90000000000000300000000000001, 250000000000000500000000000001] |