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 | 4 |
| 2 | 7 |
| 3 | 22 |
| 4 | 232 |
| 5 | 424 |
| 6 | 454 |
| 7 | 484 |
| 8 | 727 |
| 9 | 757 |
| 10 | 787 |
| 11 | 2332 |
| 12 | 23332 |
| 13 | 42124 |
| 14 | 42424 |
| 15 | 42724 |
| 16 | 45154 |
| 17 | 45454 |
| 18 | 45754 |
| 19 | 48184 |
| 20 | 48484 |
| 21 | 48784 |
| 22 | 72127 |
| 23 | 72427 |
| 24 | 72727 |
| 25 | 75157 |
| 26 | 75457 |
| 27 | 75757 |
| 28 | 78187 |
| 29 | 78487 |
| 30 | 78787 |
| 31 | 233332 |
| 32 | 2333332 |
| 33 | 4212124 |
| 34 | 4215124 |
| 35 | 4218124 |
| 36 | 4242424 |