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 | 541 |
| 2 | 709 |
| 3 | 2281 |
| 4 | 2389 |
| 5 | 2689 |
| 6 | 4861 |
| 7 | 5869 |
| 8 | 7069 |
| 9 | 8089 |
| 10 | 8761 |
| 11 | 8821 |
| 12 | 8929 |
| 13 | 9049 |
| 14 | 9601 |
| 15 | 10009 |
| 16 | 10321 |
| 17 | 10789 |
| 18 | 12421 |
| 19 | 12781 |
| 20 | 13309 |
| 21 | 13681 |
| 22 | 14341 |
| 23 | 14869 |
| 24 | 14929 |
| 25 | 16981 |
| 26 | 19309 |
| 27 | 19429 |
| 28 | 19501 |
| 29 | 19609 |
| 30 | 20389 |
| 31 | 21841 |
| 32 | 22741 |
| 33 | 23629 |
| 34 | 24181 |
| 35 | 24481 |
| 36 | 25189 |
| 37 | 26821 |
| 38 | 27109 |
| 39 | 27361 |
| 40 | 27961 |