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 | 2 |
| 2 | 29 |
| 3 | 229 |
| 4 | 449 |
| 5 | 499 |
| 6 | 929 |
| 7 | 2999 |
| 8 | 4229 |
| 9 | 4999 |
| 10 | 9929 |
| 11 | 9949 |
| 12 | 22229 |
| 13 | 24229 |
| 14 | 24499 |
| 15 | 29429 |
| 16 | 42299 |
| 17 | 42499 |
| 18 | 42929 |
| 19 | 44249 |
| 20 | 44449 |
| 21 | 49429 |
| 22 | 49499 |
| 23 | 49999 |
| 24 | 94229 |
| 25 | 94949 |
| 26 | 94999 |
| 27 | 99929 |
| 28 | 222499 |
| 29 | 224299 |
| 30 | 224429 |
| 31 | 224449 |
| 32 | 224929 |
| 33 | 229249 |
| 34 | 229499 |
| 35 | 229949 |
| 36 | 242449 |
| 37 | 242999 |
| 38 | 244429 |