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 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 10 |
| 6 | 18 |
| 7 | 32 |
| 8 | 57 |
| 9 | 101 |
| 10 | 179 |
| 11 | 318 |
| 12 | 564 |
| 13 | 1002 |
| 14 | 1778 |
| 15 | 3157 |
| 16 | 5604 |
| 17 | 9949 |
| 18 | 17661 |
| 19 | 31352 |
| 20 | 55657 |