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 | 6 |
| 4 | 8 |
| 5 | 10 |
| 6 | 12 |
| 7 | 23 |
| 8 | 38 |
| 9 | 50 |
| 10 | 65 |
| 11 | 67 |
| 12 | 95 |
| 13 | 100 |
| 14 | 108 |
| 15 | 114 |
| 16 | 281 |
| 17 | 835 |
| 18 | 894 |
| 19 | 1103 |
| 20 | 3442 |
| 21 | 6629 |