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 | 3 |
| 2 | 11 |
| 3 | 131 |
| 4 | 173 |
| 5 | 491 |
| 6 | 797 |
| 7 | 947 |
| 8 | 1931 |
| 9 | 3583 |
| 10 | 4391 |
| 11 | 6173 |
| 12 | 7937 |
| 13 | 32323 |
| 14 | 49919 |
| 15 | 64499 |
| 16 | 79997 |
| 17 | 83383 |
| 18 | 149111 |
| 19 | 232333 |
| 20 | 296269 |
| 21 | 366161 |
| 22 | 477947 |
| 23 | 611333 |
| 24 | 616169 |
| 25 | 616961 |
| 26 | 635563 |
| 27 | 667673 |
| 28 | 969179 |
| 29 | 1111991 |
| 30 | 1779779 |
| 31 | 2232523 |
| 32 | 2662669 |
| 33 | 2922229 |
| 34 | 3444341 |
| 35 | 5333353 |
| 36 | 5599999 |
| 37 | 6853663 |
| 38 | 6919691 |
| 39 | 6929929 |