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 | 5 |
| 3 | 17 |
| 4 | 23 |
| 5 | 25 |
| 6 | 28 |
| 7 | 91 |
| 8 | 187 |
| 9 | 287 |
| 10 | 398 |
| 11 | 899 |
| 12 | 1364 |
| 13 | 2921 |
| 14 | 5125 |
| 15 | 5890 |
| 16 | 8780 |
| 17 | 14881 |
| 18 | 35689 |
| 19 | 46669 |
| 20 | 71861 |
| 21 | 111710 |