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 | 4 |
| 2 | 22 |
| 3 | 57 |
| 4 | 900 |
| 5 | 1551 |
| 6 | 1920 |
| 7 | 4194 |
| 8 | 6279 |
| 9 | 10857 |
| 10 | 19648 |
| 11 | 20384 |
| 12 | 32016 |
| 13 | 63656 |
| 14 | 65703 |
| 15 | 83271 |
| 16 | 84119 |
| 17 | 86241 |
| 18 | 105570 |
| 19 | 145237 |
| 20 | 181844 |
| 21 | 271328 |
| 22 | 271741 |
| 23 | 316710 |
| 24 | 322953 |
| 25 | 331976 |
| 26 | 345185 |
| 27 | 379659 |
| 28 | 381430 |
| 29 | 409915 |
| 30 | 424503 |
| 31 | 490255 |
| 32 | 524476 |
| 33 | 542565 |
| 34 | 550271 |