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 | 229 |
| 3 | 439 |
| 4 | 859 |
| 5 | 1069 |
| 6 | 1279 |
| 7 | 1489 |
| 8 | 1699 |
| 9 | 2539 |
| 10 | 2749 |
| 11 | 3169 |
| 12 | 4219 |
| 13 | 4639 |
| 14 | 5059 |
| 15 | 5479 |
| 16 | 5689 |
| 17 | 6529 |
| 18 | 6949 |
| 19 | 7159 |
| 20 | 7369 |
| 21 | 7789 |
| 22 | 8209 |
| 23 | 8419 |
| 24 | 8629 |
| 25 | 8839 |
| 26 | 9049 |
| 27 | 9679 |
| 28 | 10099 |
| 29 | 10729 |
| 30 | 10939 |
| 31 | 11149 |
| 32 | 11779 |
| 33 | 12409 |
| 34 | 12619 |
| 35 | 12829 |
| 36 | 13249 |
| 37 | 13669 |
| 38 | 13879 |
| 39 | 14929 |