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 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 5 |
| 5 | 13 |
| 6 | 17 |
| 7 | 25 |
| 8 | 27 |
| 9 | 39 |
| 10 | 45 |
| 11 | 47 |
| 12 | 53 |
| 13 | 177 |
| 14 | 217 |
| 15 | 401 |
| 16 | 637 |
| 17 | 729 |
| 18 | 787 |
| 19 | 843 |
| 20 | 3407 |
| 21 | 8835 |
| 22 | 10283 |
| 23 | 14061 |
| 24 | 21951 |