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 | 9 |
| 2 | 15 |
| 3 | 21 |
| 4 | 44 |
| 5 | 58 |
| 6 | 64 |
| 7 | 96 |
| 8 | 108 |
| 9 | 138 |
| 10 | 160 |
| 11 | 222 |
| 12 | 534 |
| 13 | 2060 |
| 14 | 2446 |
| 15 | 3884 |
| 16 | 8794 |
| 17 | 9879 |
| 18 | 18303 |