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) |
|---|---|
| 0 | 3 |
| 1 | 5 |
| 2 | 11 |
| 3 | 19 |
| 4 | 29 |
| 5 | 101 |
| 6 | 349 |
| 7 | 521 |
| 8 | 569 |
| 9 | 571 |
| 10 | 661 |
| 11 | 1091 |
| 12 | 1489 |
| 13 | 2269 |
| 14 | 2341 |
| 15 | 2549 |
| 16 | 2659 |
| 17 | 2729 |
| 18 | 2731 |
| 19 | 4049 |
| 20 | 5279 |
| 21 | 6359 |
| 22 | 6871 |
| 23 | 7559 |
| 24 | 8231 |
| 25 | 9721 |
| 26 | 11719 |
| 27 | 11779 |
| 28 | 12071 |
| 29 | 13339 |
| 30 | 17291 |
| 31 | 17921 |
| 32 | 17959 |
| 33 | 19429 |
| 34 | 19889 |
| 35 | 20231 |
| 36 | 20359 |
| 37 | 31541 |
| 38 | 33179 |
| 39 | 33751 |
| 40 | 38651 |