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) |
|---|---|
| 2 | 3 |
| 3 | 2 |
| 4 | 7 |
| 5 | 13 |
| 6 | 21 |
| 7 | 41 |
| 8 | 91 |
| 9 | 269 |
| 10 | 419 |
| 11 | 921 |
| 12 | 2983 |
| 13 | 8519 |
| 14 | 18859 |
| 15 | 53611 |
| 16 | 136631 |
| 17 | 436341 |