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 | 9 |
| 2 | 35 |
| 3 | 91 |
| 4 | 341 |
| 5 | 559 |
| 6 | 1241 |
| 7 | 6119 |
| 8 | 7471 |
| 9 | 17261 |
| 10 | 19909 |
| 11 | 75241 |
| 12 | 143009 |
| 13 | 257651 |
| 14 | 323839 |
| 15 | 671509 |
| 16 | 860851 |
| 17 | 967591 |
| 18 | 1433969 |
| 19 | 1482571 |
| 20 | 1970299 |
| 21 | 2348641 |
| 22 | 2772559 |
| 23 | 3413159 |
| 24 | 4548059 |
| 25 | 5313691 |
| 26 | 5666509 |
| 27 | 7233841 |
| 28 | 7520291 |
| 29 | 9568441 |