This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 11 |
| 2 | 209 |
| 3 | 4169 |
| 4 | 83171 |
| 5 | 1659251 |
| 6 | 33101849 |
| 7 | 660377729 |
| 8 | 13174452731 |
| 9 | 262828676891 |
| 10 | 5243399085089 |
| 11 | 104605153024889 |
| 12 | 2086859661412691 |
| 13 | 41632588075228931 |
| 14 | 830564901843165929 |
| 15 | 16569665448788089649 |
| 16 | 330562744073918627051 |