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 | 2 |
| 2 | 11 |
| 3 | 31 |
| 4 | 41 |
| 5 | 239 |
| 6 | 521 |
| 7 | 2309 |
| 8 | 4099 |
| 9 | 4409 |
| 10 | 4441 |
| 11 | 4651 |
| 12 | 5009 |
| 13 | 5039 |
| 14 | 5261 |
| 15 | 6481 |
| 16 | 6871 |
| 17 | 7129 |
| 18 | 8609 |
| 19 | 9391 |
| 20 | 10259 |
| 21 | 12841 |
| 22 | 13759 |
| 23 | 14519 |
| 24 | 14879 |
| 25 | 14939 |
| 26 | 15569 |
| 27 | 16871 |
| 28 | 18451 |
| 29 | 20369 |
| 30 | 22441 |
| 31 | 24049 |
| 32 | 25841 |
| 33 | 28151 |
| 34 | 28279 |
| 35 | 29429 |
| 36 | 30181 |
| 37 | 30631 |
| 38 | 32089 |
| 39 | 32299 |
| 40 | 36781 |