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 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 13 |
| 5 | 17 |
| 6 | 28 |
| 7 | 40 |
| 8 | 59 |
| 9 | 74 |
| 10 | 104 |
| 11 | 137 |
| 12 | 171 |
| 13 | 216 |
| 14 | 284 |
| 15 | 349 |
| 16 | 428 |
| 17 | 524 |
| 18 | 652 |
| 19 | 790 |