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 | 29 |
| 3 | 59 |
| 4 | 89 |
| 5 | 149 |
| 6 | 239 |
| 7 | 269 |
| 8 | 359 |
| 9 | 419 |
| 10 | 449 |
| 11 | 509 |
| 12 | 569 |
| 13 | 659 |
| 14 | 839 |
| 15 | 1259 |
| 16 | 1289 |
| 17 | 1319 |
| 18 | 1409 |
| 19 | 1559 |
| 20 | 1949 |
| 21 | 2099 |
| 22 | 2309 |
| 23 | 2339 |
| 24 | 2399 |
| 25 | 2459 |
| 26 | 2549 |
| 27 | 2609 |
| 28 | 2789 |
| 29 | 2819 |
| 30 | 2939 |
| 31 | 2969 |
| 32 | 2999 |
| 33 | 3089 |
| 34 | 3209 |
| 35 | 3299 |
| 36 | 3389 |
| 37 | 3719 |
| 38 | 3989 |
| 39 | 4049 |
| 40 | 4139 |
| 41 | 4289 |
| 42 | 4409 |
| 43 | 4649 |
| 44 | 4889 |
| 45 | 4919 |