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 | 5 |
| 3 | 7 |
| 4 | 27 |
| 5 | 91 |
| 6 | 248 |
| 7 | 347 |
| 8 | 501 |
| 9 | 535 |
| 10 | 767 |
| 11 | 2002 |
| 12 | 2581 |
| 13 | 2677 |
| 14 | 8158 |
| 15 | 15977 |
| 16 | 20666 |
| 17 | 23854 |
| 18 | 72730 |
| 19 | 86816 |