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 | 5 |
| 2 | 7 |
| 3 | 40 |
| 4 | 50 |
| 5 | 237 |
| 6 | 295 |
| 7 | 1384 |
| 8 | 1722 |
| 9 | 8069 |
| 10 | 10039 |
| 11 | 47032 |
| 12 | 58514 |
| 13 | 274125 |
| 14 | 341047 |
| 15 | 1597720 |
| 16 | 1987770 |
| 17 | 9312197 |
| 18 | 11585575 |
| 19 | 54275464 |
| 20 | 67525682 |