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 | 72 |
| 2 | 222 |
| 3 | 252 |
| 4 | 372 |
| 5 | 522 |
| 6 | 552 |
| 7 | 732 |
| 8 | 2232 |
| 9 | 2322 |
| 10 | 2352 |
| 11 | 2532 |
| 12 | 2772 |
| 13 | 3222 |
| 14 | 3252 |
| 15 | 3372 |
| 16 | 3522 |
| 17 | 3552 |
| 18 | 3732 |
| 19 | 5232 |
| 20 | 5322 |
| 21 | 5352 |
| 22 | 5532 |
| 23 | 5772 |
| 24 | 7272 |
| 25 | 7332 |
| 26 | 7572 |
| 27 | 7722 |
| 28 | 7752 |
| 29 | 22272 |
| 30 | 22332 |
| 31 | 22572 |
| 32 | 22722 |
| 33 | 22752 |
| 34 | 23232 |
| 35 | 23322 |
| 36 | 23352 |
| 37 | 23532 |
| 38 | 23772 |
| 39 | 25272 |