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 | 73 |
| 2 | 733 |
| 3 | 33223 |
| 4 | 35323 |
| 5 | 72253 |
| 6 | 72353 |
| 7 | 73327 |
| 8 | 73523 |
| 9 | 73553 |
| 10 | 75223 |
| 11 | 75253 |
| 12 | 77237 |
| 13 | 77323 |
| 14 | 77527 |
| 15 | 77557 |
| 16 | 3235223 |
| 17 | 3353323 |
| 18 | 3375233 |
| 19 | 3527233 |
| 20 | 3532733 |
| 21 | 3573523 |
| 22 | 3573733 |
| 23 | 3575333 |
| 24 | 3733333 |
| 25 | 3735233 |
| 26 | 3735353 |
| 27 | 3753353 |
| 28 | 3755273 |
| 29 | 3755333 |