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) |
|---|---|
| 3 | 3 |
| 4 | 14 |
| 5 | 95 |
| 6 | 424 |
| 7 | 3269 |
| 8 | 21202 |
| 9 | 178443 |
| 10 | 1622798 |
| 11 | 17064179 |
| 12 | 177093256 |
| 13 | 2293658861 |
| 14 | 29296367476 |
| 15 | 416567286225 |
| 16 | 6250052633294 |
| 17 | 103272943796399 |
| 18 | 1717954871163982 |
| 19 | 32068960264609523 |
| 20 | 601640759502181648 |
| 21 | 12257756112146028309 |
| 22 | 257187849583000601516 |