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 | 101 |
| 2 | 12101 |
| 3 | 32321 |
| 4 | 210101 |
| 5 | 432121 |
| 6 | 1012321 |
| 7 | 1212121 |
| 8 | 3210101 |
| 9 | 3210121 |
| 10 | 3212101 |
| 11 | 3232321 |
| 12 | 3432101 |
| 13 | 5432321 |
| 14 | 5434321 |
| 15 | 21212101 |
| 16 | 21232121 |
| 17 | 23210101 |
| 18 | 23232101 |
| 19 | 43432321 |
| 20 | 45434321 |
| 21 | 101012321 |
| 22 | 101210101 |
| 23 | 101232121 |
| 24 | 121232101 |
| 25 | 123210121 |
| 26 | 123232121 |
| 27 | 321012121 |