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 | 2 |
| 2 | 3 |
| 3 | 29 |
| 4 | 127 |
| 5 | 24391 |
| 6 | 357913 |
| 7 | 571789 |
| 8 | 1442899 |
| 9 | 5177719 |
| 10 | 18191449 |
| 11 | 30080233 |
| 12 | 73560061 |
| 13 | 80062993 |
| 14 | 118370773 |
| 15 | 127263529 |
| 16 | 131872231 |
| 17 | 318611989 |
| 18 | 344472103 |
| 19 | 440711083 |
| 20 | 461889919 |
| 21 | 590589721 |
| 22 | 756058033 |
| 23 | 865523179 |
| 24 | 1095912793 |