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 | 7 |
| 5 | 10 |
| 6 | 15 |
| 7 | 30 |
| 8 | 34 |
| 9 | 54 |
| 10 | 58 |
| 11 | 103 |
| 12 | 105 |
| 13 | 205 |
| 14 | 223 |
| 15 | 279 |
| 16 | 741 |
| 17 | 2098 |
| 18 | 3523 |
| 19 | 9210 |
| 20 | 37674 |
| 21 | 89895 |
| 22 | 101509 |
| 23 | 217123 |