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 | 1 |
| 2 | 3 |
| 3 | 49737 |
| 4 | 717027 |
| 5 | 9723611 |
| 6 | 21335267 |
| 7 | 32390921 |
| 8 | 38999627 |
| 9 | 43091897 |
| 10 | 86071337 |
| 11 | 101848553 |
| 12 | 102361457 |
| 13 | 228911411 |
| 14 | 302948067 |
| 15 | 370219467 |
| 16 | 393664027 |
| 17 | 455781089 |
| 18 | 483464027 |
| 19 | 1040406177 |
| 20 | 1272206987 |
| 21 | 2371678553 |
| 22 | 2571052241 |
| 23 | 2648052857 |
| 24 | 3054713937 |
| 25 | 3597613307 |
| 26 | 3782971499 |
| 27 | 3917903851 |
| 28 | 4005163577 |
| 29 | 5419912241 |