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) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 21 |
| 3 | 22 |
| 4 | 311 |
| 5 | 321 |
| 6 | 332 |
| 7 | 333 |
| 8 | 4111 |
| 9 | 4211 |
| 10 | 4321 |
| 11 | 4331 |
| 12 | 4422 |
| 13 | 4432 |
| 14 | 4443 |
| 15 | 4444 |
| 16 | 51111 |
| 17 | 52111 |
| 18 | 53211 |
| 19 | 53311 |
| 20 | 54221 |
| 21 | 54321 |
| 22 | 54431 |
| 23 | 54441 |
| 24 | 55222 |
| 25 | 55322 |
| 26 | 55432 |
| 27 | 55442 |
| 28 | 55533 |
| 29 | 55543 |
| 30 | 55554 |
| 31 | 55555 |
| 32 | 611111 |
| 33 | 621111 |
| 34 | 632111 |
| 35 | 633111 |
| 36 | 642211 |