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 | 3 |
| 2 | 5 |
| 3 | 11 |
| 4 | 17 |
| 5 | 71 |
| 6 | 107 |
| 7 | 191 |
| 8 | 431 |
| 9 | 1151 |
| 10 | 2591 |
| 11 | 139967 |
| 12 | 472391 |
| 13 | 786431 |
| 14 | 995327 |
| 15 | 57395627 |
| 16 | 63700991 |
| 17 | 169869311 |
| 18 | 4076863487 |
| 19 | 10871635967 |
| 20 | 2348273369087 |
| 21 | 56358560858111 |
| 22 | 79164837199871 |
| 23 | 84537841287167 |
| 24 | 150289495621631 |
| 25 | 578415690713087 |
| 26 | 1141260857376767 |