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 | 19 |
| 2 | 109 |
| 3 | 139 |
| 4 | 199 |
| 5 | 229 |
| 6 | 349 |
| 7 | 619 |
| 8 | 829 |
| 9 | 859 |
| 10 | 1279 |
| 11 | 1429 |
| 12 | 1489 |
| 13 | 1609 |
| 14 | 1669 |
| 15 | 1699 |
| 16 | 1789 |
| 17 | 1879 |
| 18 | 1999 |
| 19 | 2029 |
| 20 | 2089 |
| 21 | 2239 |
| 22 | 2269 |
| 23 | 2659 |
| 24 | 2689 |
| 25 | 3169 |
| 26 | 3259 |
| 27 | 3469 |
| 28 | 3529 |
| 29 | 3559 |
| 30 | 3769 |
| 31 | 3919 |
| 32 | 4129 |
| 33 | 4159 |
| 34 | 4219 |
| 35 | 4339 |
| 36 | 4519 |
| 37 | 4549 |
| 38 | 4639 |
| 39 | 4789 |
| 40 | 4969 |
| 41 | 5419 |
| 42 | 5479 |
| 43 | 5659 |
| 44 | 5869 |
| 45 | 6199 |