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 | 280 |
| 2 | 5714 |
| 3 | 45474 |
| 4 | 227969 |
| 5 | 859369 |
| 6 | 2662569 |
| 7 | 7141953 |
| 8 | 17147823 |
| 9 | 37702863 |
| 10 | 77161513 |
| 11 | 148781633 |
| 12 | 272796342 |
| 13 | 479082422 |
| 14 | 810530182 |
| 15 | 1327228182 |
| 16 | 2111584722 |
| 17 | 3274516506 |
| 18 | 4962843396 |
| 19 | 7368036676 |
| 20 | 10736476751 |
| 21 | 15381384711 |
| 22 | 21696600695 |